We had a lot of rain this week and the puppies were sure getting the windows dirty with their curiousity looking outside. Luckly, Vivesan did the trick and got all of those smug marks off the windows in no time. The nice thing about Vivesan it that we don't have to worry about the dogs licking the glass. The product label has no warnings and it's 100% plant base. Every household and office with pets should have several bottles around.