Window cleaning is an important part of home maintenance, but it can be difficult to remove hard water stains from windows. In Mississauga, hard water can cause these stains to form on windows, and they can be difficult to remove. In this article, we will discuss the impact of hard water stains on windows in Mississauga and how to remove them.

If you live in Mississauga, then you know that the city is known for its hard water. This can be a problem for many homeowners, as hard water can leave behind unsightly stains on windows. While these stains may not be harmful to your windows, they can be difficult to remove. If you are struggling to remove hard water stains from your windows, then read on for some helpful tips.

One of the best ways to remove hard water stains from windows is to use a vinegar solution. Simply mix equal parts vinegar and water in a spray bottle and apply it to the stained areas. Allow the solution to sit for a few minutes before scrubbing it with a soft cloth. You may need to repeat this process a few times to completely remove the stains.

If vinegar does not work, then you can try using a commercial hard water stain remover. There are many different products on the market, so be sure to read the labels carefully to find one that is safe for use on windows. Apply the product according to the manufacturer's instructions and scrub the stained areas with a soft cloth.

If you still can't seem to remove the hard water stains from your windows, then you may need to call a professional. A professional window cleaner will have the tools and experience necessary to remove the stains quickly and safely.

While hard water stains can be a nuisance, they can be removed with a little elbow grease. If you have tried everything and still can't seem to get rid of the stains, then it may be time to call a professional.

1. The Impact Of Hard Water Stains On Windows In Mississauga

If you live in an area with hard water, you know that it can leave behind unsightly stains on your windows. Hard water stains are caused by a build-up of minerals on the glass, and if left untreated, they can permanently damage your windows.

Fortunately, there are a few things you can do to remove hard water stains from your windows. One option is to use a vinegar solution. Simply mix equal parts vinegar and water in a spray bottle and spritz it onto the stained areas. Let the solution sit for a few minutes, then wipe it away with a clean cloth.

If vinegar doesn't do the trick, you can try using a commercial hard water stain remover. These products are designed specifically to remove mineral deposits, so they can be quite effective. Just be sure to follow the instructions on the packaging carefully, as some products may require you to use protective gloves or take other safety precautions.

If you're still having trouble getting rid of hard water stains, you may need to call in a professional. A window cleaning company will have the tools and experience necessary to remove even the most stubborn stains.

Hard water stains can be a nuisance, but with a little elbow grease, you should be able to get rid of them.

2. The Causes Of Hard Water Stains On Windows In Mississauga

Have you ever noticed those pesky white stains on your windows that seem to be impossible to remove? If you live in an area with hard water, chances are you're all too familiar with these unsightly marks.

Hard water stains are caused by a build-up of minerals, specifically calcium, and magnesium, in your water. When water evaporates, these minerals are left behind and can bond to surfaces like glass, metal, and tile. Over time, the stains can become more difficult to remove.

There are a few ways to prevent hard water stains from forming in the first place. One is to install a water softener, which will remove the minerals from your water before they have a chance to build up. Another option is to use a vinegar solution to clean your windows regularly. This will help to break down the minerals and prevent them from bonding to the glass.

If you already have hard water stains on your windows, there are a few ways to remove them. One is to use a glass cleaner with vinegar. Another is to use a paste made of baking soda and water. You can also try using a commercial hard water stain remover. Just be sure to follow the instructions carefully and test the product on a small area first to make sure it won't damage your window.

3. The Consequences Of Hard Water Stains On Windows In Mississauga

If you have hard water stains on your windows, it's important to remove them as soon as possible. Hard water stains can cause your windows to become cloudy and difficult to see through. They can also be difficult to clean, so it's important to take care of them right away.

There are a few different ways to remove hard water stains from your windows. You can use a commercial window cleaner, white vinegar, or a solution of water and baking soda. Whichever method you choose, be sure to rinse the windows well afterward to remove any residue.

Hard water stains can be a nuisance, but they don't have to be permanent. With a little elbow grease, you can remove them and keep your windows looking clear and bright.

4. How To Remove Hard Water Stains From Windows In Mississauga

The hard water stains on windows in Mississauga can be quite unsightly. They can also be difficult to remove. There are a few different ways that you can remove hard water stains from your windows.

One way to remove hard water stains is to use vinegar and water solution. You will want to mix equal parts of vinegar and water. Then, take a clean cloth and dip it into the solution. Rub the cloth over the hard water stains. Rinse the area with clean water.

Another way to remove hard water stains is to use a commercial hard water stain remover. There are several different products on the market that you can use. Follow the directions on the product that you choose.

You can also try to remove hard water stains with a pumice stone. Wet the pumice stone and rub it over the hard water stains. Rinse the area with clean water.

If you have hard water stains on your windows, you can try one of these methods to remove them.

​Looking for ways to clean your windows without harming the environment? Mississauga residents can take advantage of green window cleaning techniques that are not only effective but also eco-friendly. One of the most popular green window cleaning methods is using vinegar and water solution. Vinegar is a natural cleaning agent that can break down dirt, grime, and fingerprints. Simply mix equal parts vinegar and water in a spray bottle and apply it to your windows. 

Use a soft cloth or sponge to wipe the solution away. Another eco-friendly way to clean your windows is by using lemon juice. Lemon juice is known for its ability to cut through dirt and grime. Simply mix equal parts lemon juice and water in a spray bottle and apply it to your windows. Use a soft cloth or sponge to wipe the solution away. If you are looking for a more natural way to clean your windows, consider using a mixture of baking soda and water. Baking soda is a natural cleaning agent that can break down dirt, grime, and fingerprints. Simply mix equal parts baking soda and water in a spray bottle and apply it to your windows. Use a soft cloth or sponge to wipe the solution away.

1. Green Window Cleaning Techniques For Mississauga Residents

Looking for some green window cleaning techniques for Mississauga residents? Here are a few tips to get you started!

1. Use eco-friendly cleaning products. There are many great eco-friendly window cleaning products on the market these days. Do some research and find one that works well for you.

2. Use a microfiber cloth. Microfiber cloths are great for cleaning windows because they are gentle and effective. Plus, they don’t leave behind any lint or streaks.

3. Use distilled water. Distilled water is great for window cleaning because it’s free of minerals and other impurities that can leave behind streaks and spots.

4. Use a squeegee. A squeegee is the best tool for getting rid of water and soap from your windows. Be sure to use a clean, dry squeegee for the best results.

5. Dry your windows immediately. Once you’ve squeegeed off the water and soap, dry your windows immediately with a clean, dry microfiber cloth. This will help prevent water spots.

 Following these simple tips will help you clean your windows in a green, eco-friendly way!

2. The Benefits Of Green Window Cleaning

As a Mississauga resident, you may be looking for ways to make your home more eco-friendly. One way you can do this is by using green window cleaning techniques. Here are some benefits of using green window cleaning products and methods:

1. They’re better for the environment.

Traditional window cleaning products often contain harmful chemicals that can be detrimental to the environment. Green window cleaning products are made with natural ingredients that are gentle on the earth.

2. They’re better for your health.

Many traditional window cleaning products contain chemicals that can be harmful to your health if inhaled or ingested. Green window cleaning products are made with natural ingredients that are safe for you and your family.

3. They’re better for your windows.

Traditional window cleaning products can sometimes damage your windows, leaving them dull and streaky. Green window cleaning products are designed to be gentle on your windows, leaving them looking shiny and new.

4. They’re more affordable.

Green window cleaning products are often more affordable than traditional window cleaning products. This is because they are made with readily available natural ingredients.

5. They’re easy to find.

You can find green window cleaning products at most stores that sell cleaning supplies. You can also find them online.

If you’re looking for ways to make your home more eco-friendly, consider using green window cleaning products and methods. They’re better for the environment, your health, and your windows.

3. The Best Green Window Cleaning Products

Looking for the best green window cleaning products? Look no further than the 3M Scotch-Brite Greener Clean Window Kit! This window kit includes an easy-to-use microfiber cloth, a scrubbing sponge, and a squeegee – everything you need to clean your windows without using any harsh chemicals.

The microfiber cloth is made from sustainable, recycled materials and is safe to use on all types of surfaces. It’s also super absorbent, so it’s perfect for removing dirt, dust, and fingerprints from your windows. The scrubbing sponge is also made from sustainable materials and can be used to remove stubborn dirt and grime. And the squeegee is perfect for getting those streak-free results.

The 3M Scotch-Brite Greener Clean Window Kit is the perfect way to clean your windows the green way. So ditch the harsh chemicals and give it a try today!

4. The Top Green Window Cleaning Tips

As a Mississauga resident, you may be looking for ways to reduce your carbon footprint. One way to do this is to use green window cleaning techniques. Here are some tips to help you get started:

1. Use a ladder made of sustainable materials.

2. Use a bucket made of recycled materials.

3. Use a sponge made of natural materials.

4. Use a cleaning solution made of natural ingredients.

5. Use a cloth made of sustainable materials.

6. Use a squeegee made of recycled materials.

7. Use a ladder stabilizer made of sustainable materials.

8. Use a glass cleaner made of natural ingredients.

9. Use a window treatment made of sustainable materials.

10. Use a green window cleaning company.

By following these tips, you can help reduce your carbon footprint and make your home more sustainable.

5. The Most Common Green Window Cleaning Mistakes

When it comes to window cleaning, there are a lot of different techniques and products that you can use to get the job done. However, not all of these methods are created equal. Some of them can do more harm than good.

If you're looking to clean your windows in a more environmentally-friendly way, then you need to be aware of the most common green window cleaning mistakes. By avoiding these mistakes, you'll be able to keep your windows clean and streak-free while also doing your part to protect the planet.

1. Not Using the Right Products

One of the most common mistakes that people make when trying to clean their windows green is not using the right products. There are a lot of different window cleaning products on the market, but not all of them are created equal.

When you're looking for a window cleaning product, you need to make sure that it is safe for the environment. Avoid products that contain harsh chemicals or that are not biodegradable. Instead, look for products that are made with natural ingredients and that are safe for the planet.

2. Not Using the Right Tools

Another common mistake that people make when trying to clean their windows green is not using the right tools. To get the best results, you need to use the right tools for the job.

For example, instead of using a traditional sponge, you should use a microfiber cloth. Microfiber cloths are more effective at picking up dirt and dust, and they're also more gentle on your windows.

In addition to using the right tools, you also need to make sure that you're using them properly. For instance, when cleaning your windows, you should always use a back-and-forth motion rather than a circular one. This will help to prevent streaks and smears.

3. Not Drying Your Windows Properly

Another common mistake that people make when trying to clean their windows green is not drying them properly. After you've cleaned your windows, it's important to dry them with a clean, dry cloth. Otherwise, you run the risk of leaving streaks and smears behind.

Window cleaning is an important part of business maintenance, and it is often overlooked. Dirty windows can lead to a decrease in business productivity, as employees are unable to see clearly out of them. In addition, dirty windows can give the impression that a company is not well-maintained, which can cause customers to take their business elsewhere. That is why businesses in Mississauga need to have a regular window cleaning schedule. A professional window cleaning company can clean windows quickly and efficiently, leaving them streak-free. In addition, a professional window cleaning company can provide window cleaning services regularly, ensuring that your windows are always clean and looking their best. If you are looking for a professional window cleaning company in Mississauga, contact the team at Clean Windows Now. We offer a wide range of window cleaning services, and we can work with you to create a custom cleaning schedule that meets your needs and budget. Contact us today to learn more!

1. The Importance Of Regular Window Cleaning For Businesses In Mississauga

As a business owner in Mississauga, you know how important it is to keep your commercial property looking its best. Part of that is making sure the windows are clean. Not only does it make your business look more professional, but it also allows natural light to shine through, making the interior brighter and more inviting.

There are many benefits to having clean windows, but it can be a tough task to keep them clean, especially if your business is located in a high-rise building. That’s where we come in.

At Spotless Window Cleaning, we specialize in commercial window cleaning. We have the experience and the equipment to get the job done quickly and efficiently. We also offer a variety of other services, such as pressure washing, gutter cleaning, and solar panel cleaning.

If you’re looking for a reliable and professional window cleaning company in Mississauga, call us today. We’d be happy to give you a free quote.

2. The Benefits Of Window Cleaning For Businesses In Mississauga

Are you a business owner in Mississauga? If so, then you know how important it is to keep your business looking its best. This means regular window cleaning. Not only does this ensure that your customers can see in, but it also gives your business a professional appearance.

There are many benefits of regular window cleaning for businesses in Mississauga. Let’s take a look at a few of them.

1. Improved curb appeal

One of the most obvious benefits of regular window cleaning is improved curb appeal. This is especially important if your business is located on a busy street. Customers are more likely to come in if they can see that your business is well-maintained.

2. Enhanced customer experience

In addition to improved curb appeal, regular window cleaning can also enhance the customer experience. If customers can’t see in, they’re less likely to come in. This is why it’s important to keep your windows clean.

3. Increased natural light

Another benefit of regular window cleaning is increased natural light. This is because dirt and grime can block out sunlight. This can make your business feel dark and uninviting.

4. Reduced energy costs

If your business is located in an area with high energy costs, regular window cleaning can help to reduce these costs. This is because dirty windows can block out sunlight, which means your business has to rely more on artificial lighting.

5. Increased property value

Finally, regular window cleaning can also increase the value of your property. This is because potential buyers will see that your business is well-maintained.

These are just a few of the benefits of regular window cleaning for businesses in Mississauga. If you’re not already doing it, we recommend that you start.

3. The Importance Of Hiring A Professional Window Cleaning Service For Businesses In Mississauga

As a business owner in Mississauga, you know the importance of making a good first impression. Part of that is keeping your storefront and office windows clean. Many business owners think that they can save money by doing this work themselves or assigning it to employees, but the truth is that hiring a professional window cleaning service is a wise investment. Here are three reasons why:

1. A professional window cleaning service will do a better job.

Your employees are not trained in window cleaning and are likely to do a subpar job. In contrast, professional window cleaners are experts in their field and will clean your windows quickly and efficiently. They will also use the right tools and techniques to ensure that your windows are sparkling clean.

2. A professional window cleaning service will save you time.

Cleaning windows is time-consuming, and it’s not an efficient use of your employees’ time. By hiring a professional window cleaning service, you can free up your employees to do their regular job duties. This will increase productivity and ultimately save you money.

3. A professional window cleaning service will protect your investment.

Your windows are a significant investment, and you want to protect them. Hiring a professional window cleaning service will extend the life of your windows and keep them looking their best. This will ultimately save you money in the long run.

So, if you’re looking to make a good impression and save money, hiring a professional window cleaning service is the way to go.

4. The Benefits Of Hiring A Professional Window Cleaning Service For Businesses In Mississauga

As a business owner in Mississauga, you understand the importance of making a good impression on potential customers. First impressions are important, and one of the first things that potential customers will see when they pull up to your business is the condition of your windows. If your windows are dirty, it can give the impression that your business is also dirty and that you don't care about the appearance of your property. This is why it's so important to keep your windows clean at all times.

While you may think that you can save money by cleaning your windows yourself, the truth is that it's always best to hire a professional window cleaning service. Here are four benefits of hiring a professional window cleaning service for businesses in Mississauga:

1. They Have the Right Equipment

One of the main benefits of hiring a professional window cleaning service is that they have the right equipment to get the job done quickly and efficiently. They also have the proper safety equipment to ensure that they don't injure themselves or damage your property.

2. They Know What They're Doing

Another benefit of hiring a professional window cleaning service is that they know exactly what they're doing. They have the experience and training necessary to clean your windows quickly and thoroughly. They also know how to safely clean your windows without damaging them.

3. They Save You Time

When you hire a professional window cleaning service, you'll save a lot of time. You won't have to spend your valuable time cleaning your windows yourself. Instead, you can use that time to focus on running your business.

4. They're Affordable

Many people think that hiring a professional window cleaning service is expensive. However, the truth is that it's very affordable. When you compare the cost of hiring a professional to the cost of buying the necessary equipment and supplies, you'll see that it's very reasonable.

If you're looking for a professional window cleaning service in Mississauga, be sure to contact us today. We offer a wide range of services to businesses of all sizes.o edit.

If you're looking for some easy and effective DIY window cleaning tips for Mississauga residents, you've come to the right place! In this article, we'll discuss some simple ways to clean your windows without using any harsh chemicals. One of the best ways to clean your windows is to use a mixture of vinegar and water. Simply mix one part vinegar with three parts water, and spray it onto your windows. The vinegar will help to break down any dirt or grime, and the water will help to rinse it away. Another great way to clean your windows is to use a mixture of ammonia and water. Mix one part ammonia with four parts water, and spray it onto your windows. The ammonia will help to break down any built-up grease or dirt, and the water will help to rinse it away. If you're looking for a quick and easy way to clean your windows, you can use a squeegee. Squeegees are a great way to remove any water or dirt that's been left on your windows after rinsing them with water. Finally, be sure to keep your windows clean by wiping them down with a cloth every few days. This will help to remove any dirt

1. Mississauga Residents Can Save Money By Cleaning Their Windows

As a Mississauga resident, you may be looking for ways to save money. One way you can do this is by cleaning your windows. While this may seem like a daunting task, it is quite easy and can save you a lot of money in the long run.

Here are some tips for cleaning your windows:

1. Invest in a good quality squeegee. This will make the job much easier and will help you avoid streaks.

2. Make a solution of one part vinegar to ten parts water. This will help remove any build-up on your windows.

3. Wet your squeegee and run it along the window. Start at the top and work your way down.

4. Use a dry cloth to wipe up any water that is left behind.

5. Repeat on the other side of the window.

By following these simple tips, you can easily clean your windows and save yourself some money.

2. Tips For Cleaning Windows Effectively

Are your windows looking a little dull? If so, it might be time for a good cleaning. But if you've never cleaned windows before, it can seem like a daunting task. Luckily, we're here to help. In this blog, we'll give you two tips for cleaning windows effectively.

1. Start with a clean, dry cloth.

This might seem like a no-brainer, but it's important to start with clean, dry cloth. Otherwise, you'll just be spreading dirt and grime around. If you don't have clean cloth, you can always use a paper towel or even an old t-shirt.

2. Use a circular motion.

When you're cleaning the windows, be sure to use a circular motion. This will help to avoid streaks. And if you do happen to get a streak, simply go back over it with a clean, dry cloth until it's gone.

Following these two tips should help you get nice, clean windows. But if you're still not sure, there's no shame in hiring a professional window cleaner. They'll have your windows looking good as new in no time.

3. The best products for window cleaning

Looking for the best window cleaning products for your home in Mississauga? Look no further than your local hardware store or online retailers. There are a variety of window cleaning products available that can make your cleaning tasks easier and faster. Here are three of the best window cleaning products available:

1. Glass cleaner: This is a must-have product for any window cleaning project. Glass cleaner can be used to clean both the inside and outside of your windows. Be sure to choose a glass cleaner that is designed for use on windows.

2. Window squeegee: A window squeegee is a tool that is used to remove water and streaks from windows. A good window squeegee will have a firm, rubber blade that is easy to maneuver.

3. Window scrubber: A window scrubber is a tool that is used to remove dirt and grime from windows. A good window scrubber will have soft, bristles that are easy on your windows.

When using any of these window cleaning products, be sure to follow the manufacturer’s instructions. This will ensure that you use the product correctly and that you do not damage your windows.

4. How To Avoid Damage When Cleaning Windows

Looking for some tips on how to avoid damage when cleaning your windows? Keep reading for some great tips from the experts!

1. Always use a soft, clean cloth when cleaning your windows. This will help avoid scratching the surface.

2. Use a mild soap and water solution to avoid damaging the window’s surface.

3. Rinse the window thoroughly with clean water to remove any soap residue.

4. Dry the window with a clean, soft cloth.

5. If you are using a ladder, be sure to use it safely. Avoid leaning too far to one side and use someone to spot you if possible.

By following these simple tips, you can avoid damage to your windows and keep them looking great for years to come!

A well-maintained home looks its best from the inside and out. One way to ensure that your home looks its best is to have professional window cleaning done regularly. Window cleaning is essential for the health and safety of your family, and it can also improve the look and feel of your home.

1. The Importance Of Professional Window Cleaning For Mississauga Homeowners

Most Mississauga homeowners don’t give much thought to the importance of professional window cleaning. However, the truth is that keeping your windows clean is an essential part of maintaining the value and beauty of your home. Here are just a few of the reasons why professional window cleaning is so important for Mississauga homeowners:

1. Streak-Free Windows

One of the most obvious reasons to hire a professional window cleaning company is to get streak-free windows. Trying to clean your windows yourself can often lead to streaks and smears that are difficult to remove. A professional window cleaner will have the experience and knowledge to clean your windows without leaving any streaks behind.

2. Remove All the Dirt and Grime

Another reason to hire a professional window cleaning company is to remove all the dirt and grime that has built up on your windows. Over time, your windows can become covered in a film of dirt, dust, and grime. This not only makes your windows look dirty, but it can also affect the way they function. A professional window cleaning will remove all of this dirt and grime, leaving your windows looking and functioning like new.

3. Extend the Life of Your Windows

One of the most important reasons to keep your windows clean is to extend their life. Just like any other part of your home, your windows need to be properly maintained to function properly and last as long as possible. When you neglect to clean your windows, the dirt and grime can cause them to become scratched and damaged. This can shorten the life of your windows and eventually lead to the need for expensive repairs or replacements.

4. Improve the Energy Efficiency of Your Home

Another important reason to keep your windows clean is to improve the energy efficiency of your home. When your windows are covered in dirt and grime, they don’t allow as much light to enter your home. This can make your home darker and make it harder to heat and cool your home. Keeping your windows clean will help to improve the energy efficiency of your home and lower your utility bills.

5. Protect Your Furnishings

One Final Reason To Keep Your Windows Clean Is To

2. The Benefits Of Having Clean Windows

As a Mississauga homeowner, you know that keeping your home in tip-top shape is important. Part of that is ensuring that your windows are clean. Here are just a few of the benefits of having clean windows:

1. Better views – Obviously, one of the main benefits of having clean windows is that you’ll be able to enjoy better views. Whether you’re looking out at your backyard or taking in the sights of the city, clean windows will make the view that much better.

2. Improved curb appeal – If you’re thinking of selling your Mississauga home, then you’ll want to make sure that it has great curb appeal. Having clean windows is one way to help achieve that.

3. More natural light – Another benefit of having clean windows is that your home will enjoy more natural light. That’s because dirt and grime can build up on your windows, making them less transparent and therefore allowing less light to enter your home.

4. Lower energy bills – Did you know that dirty windows can make your home’s heating and cooling system work harder? That’s because dirt and grime can act as an insulator, making it more difficult for your home to maintain a comfortable temperature. As a result, you may see a spike in your energy bills.

5. Extended window life – Finally, keeping your windows clean can help them last longer. That’s because dirt and grime can cause them to deteriorate faster, so by keeping them clean you’ll be able to enjoy them for longer.

As you can see, there are plenty of reasons to keep your windows clean. And, when it comes to window cleaning in Mississauga, there’s no one better to trust than the experts at Window Washing Wizard. We have the experience and expertise to get your windows sparkling clean, and we’re always happy to provide a free quote. Contact us today to learn more!

3. The Convenience Of Professional Window Cleaning Services

When it comes to window cleaning, Mississauga homeowners have a lot of options. They can either do it themselves or hire a professional window cleaning service. There are a few reasons why professional window cleaning services are the better option.

Convenience is one of the biggest reasons to hire a professional window cleaning service. Mississauga homeowners who try to clean their windows often have to work around their busy schedules. This can be difficult, especially if they have a full-time job and a family. With a professional window cleaning service, they can schedule an appointment that fits their schedule.

Another reason to hire a professional window cleaning service is that they have the right equipment. Mississauga homeowners who try to clean their windows often have to use old rags and cleaning solutions that are not very effective. Professional window cleaning services have the latest equipment and cleaning solutions that will leave your windows looking streak-free and sparkling clean.

Finally, professional window cleaning services are insured. This means that if something happens to your windows while they are being cleaned, you will not be held liable. Mississauga homeowners who try to clean their windows could be held liable if something goes wrong.

If you are looking for a professional window cleaning service in Mississauga, look no further than Crystal Clear Window Washing. We offer convenient appointment times, the latest equipment, and cleaning solutions, and we are fully insured. Contact us today to schedule a free estimate.

4. The Peace Of Mind That Comes With Hiring A Professional Window Cleaner

As a Mississauga homeowner, it's important to keep your home in top condition. This means making sure that your windows are clean and free of streaks. While you could clean your windows yourself, it's best to hire a professional window cleaner. Here are four reasons why:

1. A professional window cleaner will have the right tools and equipment. This means that they'll be able to clean your windows quickly and efficiently.

2. A professional window cleaner will know how to clean your windows without leaving streaks. This is something that can be difficult to do if you're not experienced.

3. A professional window cleaner will be able to reach those difficult-to-reach places. This means that your windows will be completely clean, including the frames and ledges.

4. A professional window cleaner will have insurance. This means that if anything should happen while they're cleaning your windows, you won't be held liable.

Hiring a professional window cleaner is the best way to ensure that your windows are clean and streak-free.