I stay away from Bleach. The chemicals in in there are just brutal. Plastic absorbs bleach, actually, many other materials do - glass excluded. I knew the vinegar/peroxide cleaning thing was effective, but until I read up that link Syst3m posted, I had no idea! It is even more effective than bleach and many other commercially available cleaners! Weeeeeeeeeeeee...all natural and super-potent!