Silver sulfadiazine cream... It generally gets deep like that with bedding; however, paper can cause this but it stays shallow. For example, I have a het albino which I did not recognize until it was late, but they became deep holes. Went to vet, antibiotics were given, and they are healing. Her problem is she won't eat, and when I attempt to assist feed she pulls so hard she could break something if I hold on... I have a male pastel who just ot this but I put that cream on and he's doing well. Just waiting for him to shed. A male mojave has a very mild version as it just looks like rug burn lol. Anyways I put cream on that as well. So as you can see, I've had a little too much experience. Apply the silver sulfadiazine cream twice a day with a q-tip, watch it, and hopefully by shed you'll see significant improvement. O n my vet told me about the cream, not a homeopathic remedy