I use whiten strips, toothpaste with whiten and I am able to get pretty white teeth. The problem I have is if I do not use the strips or other whiten products all the time I can not seem to keep my teeth the whitest. You are not supposed to use these products all the time, but then what else can I do? This is a pain. I want to have white teeth all the time. Anyone know how to keep white teeth white?