We have recently gotten 3 mini lop rabbits for 4-H projects/pets. They are all outside and have nice roomy pens. Since they are outside, I put boxes in the cages to protect the rabbits from the weather. The problem is now that they have been using them as litter boxes instead of a bed. I'm not really sure what I can do to encourage them to not use them as litter boxes. The weather is nicer now, but in 6 months when it's winter, it can be brutal. I would like to have them on sleep on something, so they can be off the wire cage floor, but obviously, the boxes I had aren't going to work. Any suggestions would be great!