I'm using sand for the first time here, too. Does it get too cold for them in the winter?I love the house! Here I use an igloo dog house, a recycled kids playhouse, and I also have a stall in the barn for my ducks. Backing up to the flooring, I say sand I have done bare dirt and bare dirt plus straw.... Don't don't don't do that. It is disgusting and never dries out and smells to high heaven. I have also done pea gravel, which I liked. Except that eventually that disappeared in the mud. So then I did a layer of landscape fabric, with sand atop that. And I love it.![]()