For anyone who's using Squeegee off and is having problems with it, stick to the recommended dosage. I did a big conservatory today, in the full sun, and I didn't leave a single smear or haze, or anything like that. It should say something like 2 teaspoons per gallon or something along those lines. I use about 15ml per 10l water. Have been using it for 2 years, and never had a problem, ever.