Cinn// wow, how did you attach them? Is there a passage from the bottome manor to the top?
This is the cage this week:

(It's use-whatever-we-have-left week, so excuse the icky colors

)
I didn't put many hammocks because in this hot weather no one used them..

They won't use enclosed shelters either.
Any good ideas on how to keep my rats cozy and entertained, but cool at the same time?