I'm gearing up to install some hanging cages in our barn for rabbits. They have open mesh floors so all the excrement falls through to the barn floor where it can be composted. This makes cleaning much easier and I think provides a better environment for the animals.

I would really like to do something like this with my rats too instead of keeping them in a rack, if possible. You can't keep rats in a rabbit cage because the mesh floor is way too big for their feet. I think if I used mesh that would support rat feet then the opening would be too small to pass the rat excrement through.

So I wanted to throw this out here and see if anyone has done this before and what your set up looked like???