Originally Posted by
olorin19
I've used plain bark mulch (without dye) for quite a few squirrels and never had an issue. I get truckloads of this for my own landscaping, so when I need some for a new squirrel it is just a matter of grabbing some from my yard.
While I have also used topsoil, I prefer the bark mulch, especially for indoor use. With topsoil used indoors, unless you keep adding water, you get lots of dust. Plus, the squirrels enjoy chewing on pieces of the mulch.
The outdoor squirrels here (both released and wild) enjoy the same mulch in my yard - digging in it, rolling around, etc.