"I use it for about everything. Some website shows ADVANAGE is scam door-to-door sales, maybe because it's door-to-door and product is pricey. I own and operate limo. I've used many different window cleaners in many years. Also, I use different type of detergent mix for drinking glasses (inside of limo).
"I mix with one cap of ADVANAGE, one shot of cheap vodka, and water to regular size spray bottle for windows and drinking glasses (Rock glasses, wine glasses, champagne flute). One cap of ADVANAGE works better than Windex™, Turtle™ window cleaner, or Raindrop™ window cleaner. Cost of filling up ADVANAGE to my empty spray bottle maybe just dollar or less, because I use only one or two caps of ADVANAGE.
"I love this not because cost effectiveness, but it's best product I've used. It saves my time to wipe whole limo, windows, and glasses in and out. Nothing sticks after you wipe windows with it, just like waxed car body (I've never try to use it for car body, but maybe works). I also use different mixture ratio for carpet, home kitchen, garage floor, cabinet, and furniture.
"Maybe you think $40 is too much. I honestly felt that way too. Now I have three bottles of ADVANAGE in my storage. It's sold only door-to-door and I buy them whenever they come to my door. But, my first bottle is still not empty yet (everyday use, for 2 years). Spray bottle mix with ADVANAGE in my limo, kitchen, personal cars, garage, and everywhere. Give it try."