Yes! Within two weeks we had a puppy wet herself in her sleep and one of the adults throw-up on one of the beds and had to take everything off, wash it, and spot clean the mattress. We need a waterproof cover. 😅
We do kongs and rawhides. It just depends on the mood they're in which they like. 😆 They've never shown a ton of interest in bones or nylabones. Actually, they also don't really chew the kongs, just bounce them around and case them.