Thanks...when I asked the water question, I mean fluids. Is there a way to be sure that 48 oz is enough but not too much? I have the simple dipsticks but I don't know how reliable they are, they were really cheap. And I don't think I could make a bag of pee fit up there w/out the pressure inside popping the bag haha. Not to mention the edges would be sharp...oww! How would that even work? Any ladies?