:wave: Hi! I always using roofing felt to line my shed floors. I don't actually know if it's harmful but having used it for about the last 15 years and never having had any problems - it's probably safe to assume it's OK (unless I've just been exceptionally lucky). I find it gives the rabbits plenty of grip and of course, it's waterproof.
Do they not try and eat the rugs?
Meg and Ben completely trashed their snugglesafe cover :roll: