They spend MOST of their time in the pond.(so they phoo in their lol ) . which I drain every other day, And up til now they can free range outside their pen area. Now its getting colder and they have been stayin in more.. I have blankets laid out over the rocks up to the pond and they do phoo on them but I shake them out , refold to the clean side and then wash !! Ive been keeping their food in the HUT to entice them to go in more. I have 2 small bowls food and large bowl of water with a puppy pad underneath and change the puppy pad everday. I imagine when I keep them in the HUT all nite when it gets really cold I will notice a mess, but up til now its hardly nothin... (yes , because they are small and only 4 )