We have 3 bunnies...2 females and 1 male...all spayed and neutured. They were house bunnies and fully litterbox trained, They would be let out of their cage twice a day for a few hours to run and play and they always used the litterbox. A couple of weeks ago they were moved outside into a 5 x 8 hutch. Part of it is enclosed for the winter and the other part has half inch hardware cloth as the base. My question is this...they are now NOT using the litterbox but will pee on the floor in the enclosed area. Its just wood. I need to change what this is or else the wood is just going to keep soaking up the pee and eventually have to be replaced. I did put a litterbox in that area about a week ago and they will use it some but they are still peeing elsewhere. Any ideas what to make this floor out of so its easily cleaned?