8 Best Concentrated Glass Cleaners 2025 in the United States

The Unger Professional Streak-Free EasyGlide Glass Cleaner Concentrate is a highly effective glass cleaning solution. Its standout feature is its impressive concentration level: a 32 oz bottle can make up to 25 gallons of cleaning solution, making it a cost-effective choice for large cleaning tasks. Additionally, the formula is ammonia-free and environmentally friendly, which is safer for skin and surfaces and makes it suitable for those sensitive to strong chemicals.

The cleaner is versatile, as it works on various glass surfaces including windows, mirrors, shower doors, and even car windshields, and is safe for use on tinted windows and LOW-E glass, making it a good fit for household and automotive cleaning tasks. Users will appreciate the streak-free cleaning results that leave no foam, film, or residue behind, ensuring a clear and spotless finish. Being unscented, it’s a good option for those who prefer a fragrance-free cleaning experience.

Mixing and using the cleaner is straightforward, but to achieve optimal results, pairing it with an Unger window scrubber and squeegee (sold separately) is recommended. A potential drawback is the additional purchase of these tools for best results, which may be an extra cost for some users. Also, being unscented might not appeal to those who prefer a fresh scent after cleaning. It’s a solid choice for anyone needing a powerful, eco-friendly glass cleaner that delivers professional-quality results.

Windex Outdoor Window and Glass Cleaner is a concentrated formula designed for deep cleaning outdoor surfaces. It comes in a pack of two 32 fl oz bottles, making it economical for extensive cleaning tasks. One of its notable strengths is its compatibility with garden hoses, allowing for convenient and extensive coverage.

It is also safe for use on various surfaces such as glass, brick, and patio furniture, and won't harm plants, siding, or synthetic decks. The formula is free from phosphorus and ammonia, making it a safer choice for outdoor environments. Its ease of use is a significant advantage, as it requires no wiping—just spray, rinse, and let dry to achieve a streak-free shine.

Another benefit is that it’s unscented, which might be preferable for users sensitive to strong smells. However, it’s important to note that this cleaner should not be used on automobiles and newly sealed asphalt, which could be a limitation for some users. Ideal users for this product are homeowners with extensive outdoor cleaning needs who value convenience and a streak-free finish.