Windex Outdoor Window Cleaner and Windex Crystal Rain Window Cleaner both receive positive reviews from consumers on HomeDepot.com. The outdoor cleaner attaches to a garden hose and has a 3.5- out of five-star average review. The other product is suitable for indoor or outdoor use and receives a 4.5-star review.
On Amazon.com, the highest consumer rated outdoor glass cleaner is Windex Outdoor All-in-One pads, rated 4.5 stars out of five. These pads contain Windex, require water for activation and can each clean about 20 windows.
SprayWay is a general purpose glass cleaner that has positive reviews on Amazon.com with 4.9 out of five stars. Reviews cite its streak-free performance and shine and that it stays in place when sprayed. Greenwald's Glass and Window cleaner is also suitable for indoor and outdoor use. It receives 4.9 out of five stars, and users find it cost effective and streak-free. It is a concentrate that the user mixes with water.
The New York Times compared 20 different glass cleaners in 2009. Those that stood out were SprayWay, Stoner Invisible Glass Premium Glass Cleaner, Greenology's GreenShield Organic Glass Cleaner and Mrs. Meyer's Clean Day Window Spray. The article notes that homemade glass cleaner of vinegar, water and rubbing alcohol was also effective.