It's not exactly good for them, but mine love them. My rats have never had a problem with them. I figure they're only with us for a short time, so I let them have them. ( don't know if it's the same log, but I get them from Walmart). I'm sure others opinions will differ about them though..there are also the wooden colorful hide logs(there bendable logs) at petsmart. Mine love sleeping in and chewing on those as well.