I have a new zealand white buck(my first rabbit) and we got a hutch off a friend but were gonna build another one and were gonna build it with 2 compartments with the cage in the front and build a enclosed box on the back attacked to the hutch with a hole on it so the rabbits can go in and out kinda like a little dog house. Anyway for right now I put a cardboard box in his hutch a little bigger than him filled with straw and he loves it and likes to stay in there and dig through the straw and eat it,but I hate that he poops and pees in there so I'm worried about him doing it in the new hutch were gonna build and I don't want him to because thats where he will sleep or stay warm...what can I do to stop this? I know they can be litter trained but there outside and I'm gonna breed and sell them for 4-h.