I'm sorry I didn't respond sooner, I was sick for over a week -ugh!
Anyway, thanks for all the tips. I made immediate changes after the helpful responses I got.
I took the igloo out. The sleeping house we were using, my husband had made out of kd pine. He ended up making another one, a bit...
We have 2 female chinchillas that we took in from a friend who didn't want them anymore. She'd had them for six months and says they are around 10 months old (pet store chins).
She had them in a single critter nation cage, which she gave us. The only thing in the cage, besides the plastic...