Professional window cleaners generally use highly concentrated soaps designed for optimal slip and streak-free drying. The industry standard is Titan Labs Glass Gleam (versions 3 and 4), alongside professional-grade concentrates like Unger EasyGlide and Ettore Squeegee-Off.
Professional window cleaners typically use concentrated, pH-neutral soaps mixed with water in a bucket, rather than ready-to-use sprays. The best pro solutions require high-quality lubrication for the squeegee and strong degreasing power to lift dirt, but without leaving a sticky residue that attracts future dust.
Professional window cleaners rely on a combination of pure water systems for exterior high-reach work and a simple mixture of water and mild dish soap (like Dawn) for traditional hand washing. Their toolkit focuses on high-quality, long-lasting equipment designed for speed, streak-free results, and deep cleaning.
Professionals typically mix water with dish soap or an ammonia-based cleaner for effective grime removal. Some also use vinegar for eco-friendly cleaning, depending on the type of dirt they're tackling.
Best window cleaner for streak-free windows
Professional glass cleaners prioritize ammonia-free formulations that prevent streaks and protect window tints. Top-rated products for commercial facilities, automotive detailing, and architectural cleaning include highly concentrated soaps and ready-to-use sprays that safely cut through grime, smoke haze, and fingerprints.
Many professional window cleaners add isopropyl alcohol to their solution. It speeds up drying and reduces streaks because alcohol evaporates quickly.
A simple, highly effective DIY mixture of 1 part distilled white vinegar and 1 part warm water cleans windows better, costs less, and avoids leaving behind the chemical residue that causes traditional blue cleaners to streak. Add 2-3 drops of Dawn dish soap for greasy glass.
Start by mixing one part vinegar to 10 parts water in a spray bottle. Then, spray the solution onto the window and use a microfibre cloth to wipe away dirt and grime. For tougher stains, use a soft-bristled brush to scrub away the dirt. Once you've finished cleaning, use a squeegee to remove any excess liquid.
Dawn as a substitute glass cleaner
One of the most effective ways to clean glass is dish soap – it's what professional window cleaners use when cleaning exterior windows. Dish soap can remove stuck-on dirt and cuts any hazy build-up. It also works well on cloudy mirrors.
For the best streak-free clean, mix 2 cups distilled water, 2 tablespoons distilled white vinegar, and 1 teaspoon of liquid dish soap (like Dawn) in a spray bottle. Vinegar cuts through grime, while the water and soap allow a squeegee to glide smoothly without leaving any residue.
Let it sit for 10-20 minutes. The vinegar will help loosen the residue, so you can wipe it away more easily. Bird droppings or other tough grime: pre-soak the area with a vinegar solution and allow it to soften before scrubbing with a damp microfiber cloth.
Always clean the window frames, grids, and hardware first, using cloths or brushes and mild detergent as needed. Wipe these window parts dry. Next, wipe the glass with a dry cloth to remove dust and dirt before wet-cleaning. Then, scrub the glass with a scrubber or sponge that is dampened with cleaning solution.
Yes, a mixture of vinegar and Dawn dish soap is highly effective, inexpensive, and a great DIY alternative to commercial window cleaners. The vinegar cuts through grime and prevents water spots, while the Dawn cuts grease and provides the perfect lubrication for a squeegee to glide across the glass.
The acidic composition of white vinegar works efficiently to break down the film that can accumulate on your windows. For a basic vinegar cleaning solution, we recommend mixing one part distilled vinegar to 10 parts warm water in a spray bottle.
Windows usually look streaky because leftover soap film or dirt is moved around on the glass and allowed to dry. This generally happens when using the wrong tools (like paper towels or dirty rags), applying too much cleaning solution, or cleaning in direct sunlight.
The 20-minute rule in cleaning (often combined with the 10-minute break as the 20/10 Rule) is a productivity method where you set a timer and clean as quickly and intensely as possible for 20 minutes. When the timer goes off, you immediately stop cleaning and take a mandatory 10-minute break.
Whether you are out of name brand glass cleaner or you want to use a more natural cleaner, vinegar works wonders on windows. Try a 50/50 solution of vinegar and water for a streak-free clean. You can use a spray bottle or dip a rag in the solution, just like you would an ordinary cleaner.
The overall top-rated glass cleaner is Sprayway Glass Cleaner. Revered as "The World's Best" since 1947, its ammonia-free, heavy-duty foaming action clings to vertical glass surfaces to dissolve grime, smoke film, and fingerprints without dripping.
Zep Streak-Free Glass Cleaner is generally considered superior to Windex by users and reviewers for heavy-duty cleaning and achieving a streak-free finish, particularly on auto glass and mirrors. While Windex is a reliable, easy-to-find household cleaner, Zep often outperforms it with its professional-grade, foaming formula that clings to surfaces.
To remove the stubborn, oily haze from the inside of your windshield, use a microfiber cloth with an ammonia-free cleaner, such as a 50/50 mix of white vinegar and water or rubbing alcohol and water. Degrease with hot water and dish soap, wipe with vertical/horizontal motions, and buff with a dry towel.
5 Common Window Cleaning Mistakes You Should Avoid
Professional window cleaners rely on a combination of pure water systems for exterior high-reach work and a simple mixture of water and mild dish soap (like Dawn) for traditional hand washing. Their toolkit focuses on high-quality, long-lasting equipment designed for speed, streak-free results, and deep cleaning.
Mix one cup of distilled water with half a cup of white vinegar. Add a few drops of blue Dawn, about half a teaspoon, and a dash of rubbing alcohol. Spray on the window and use a microfiber cloth to wipe. It's that easy.