wood

Hello! So I've been thinking that I would actually get a wheel for my girls since they are sooooo active during the night and I would just want them to have an additional way to get some of that energy out. I know that they might not like it or use it much, BUT on the other hand I've also read...

Hello! So pretty much a simple question, I have this toy and I was wondering if it is safe to use with rats for chewing etc. OR if the bell or whatever inside there could cause some problems? Should the bell be removed? Or should I not even use it at all?