Looking at the review site you might notice that there are many products listed one being angels eyes for dogs. (angeldogsfoundation.org)
We use angel eyes twice a day to wipe the film but I know it's painful for her. (1800petmeds.com)
At Angels Eyes, we know of a few simple «dog training» techniques that can help you discourage undesirable behaviors before they become routine. (angelseyesonline.com)