I know you guys know that guinea pigs tend to backwash in their water bottles right??:rolleyes: ;) Well, I was wondering if any of you know anything about cleaning them out...I've read a few things, but they don't necessarily work, and I know Dom would appreciate me if I could actually get his water bottle CLEAN. lol:rolleyes: So what can I use that will get the inside of his water bottle clean?:)