I carry a 32 oz GatorAid bottle with me. Its the perfect size for my treestand (Old Man Vision stand). Its the perfect size for getting everything in the bottle and it holds a lot. Its rare that I go more than 32 oz in a morning, it happens, but its rare. I've heard people say that urinating doesn't spook the deer, but its easy enough to carry the bottle and not have to worry about it either way.