Grrr!!! Is right on those mites! My jungle carpet python had mites. This is what I did...First I isolated her into another room to avoid my 2 corns and milk from getting them. Then I tore apart her entire cage. Threw out her substrate, I use repti bark, and her piece of cork bark I had in there for her to hide under. (I think the mites and/or eggs were in the cork bark). Some people say you can bake the cork bark to kill any mites on it but I tried that and it made our entire oven and house reak of the smell. I just took the loss and threw it away. Bought some Prevent-O-Mite and sprayed her entire cage.
I had my python soaking in cooking oil during all this to kill any mites that were on her. The cooking oil worked great. I found more mites on her. The cooking oil gets under the scales where the mites are so they drown. Regular water does not work. I just used enough to cover the 5 gallon tank I had her in temporarly.(She is about 4 foot long) With her moving around she got it all over her, thus killing the mites. After her soak, I just held her under the faucet and rinsed her off.
Some folks will say you don't need to do all that..just spray Prevent-O-Mite. But I do every thing above and beyond. :0)
After the tank had aired out, I just put newspaper down as the substrate till I was sure I didn't see anymore mites. I think I waited till after she shed then put her repti bark back in. NO MORE CORK BARK FOR ME.I'm almost possitive that's were the mites were hanging out. I didn't see anything on my jcp when I bought her. I have not seen any more mites since. Good Luck!!