I tried the water only route the first couple of weeks. This was quite hard because I am addicted to caffeine. Now, I just drink anything I want, and brush my teethand trays every chance I get. Usually about every hour or so. I can get my trays in and out quickly, plus I have a private bathroom at work, so it's easy for me. I do use a flouride mouthwash every morning and evening also to combat cavities.

I soak my trays in Polident cleanser every night during dinner, and that gets them nice and clean.