I found a couple superballs I had in my house and threw them in the cage and the rats loved them but I took them out when I noticed they were chewing pieces off them and figured I would ask here if anyone knows if they are safe for them?
i think they'd be okay if you supervise them
rats rarely choke; plus, they have that diastema (?) thing that closes off entry to the back half of their mouth (where their wind/food pipe is) when they're gnawing something! ;D