I don't have goats, but for our sheep in the two run-in/side barns, their bedding is dirt. Inside the masonry barn, in the pens they have access to, it is bedded with straw (plus the hay they pull out of the feeders
). If they aren't out on pasture or eating hay, they prefer to spend their time in one of the run-in/side barns. That's the one with the dirt floor.
If you want to save money (by not purchasing bedding) and time (by not cleaning out the barn), then just use plain 'ole dirt. Won't hurt them...it's just dirt.

If you want to save money (by not purchasing bedding) and time (by not cleaning out the barn), then just use plain 'ole dirt. Won't hurt them...it's just dirt.