I just had this problem with one of my ball pythons. I purchased Natural Chemistry Reptile Relief and PAM. I put on a pair of gloves, sprayed some of the Reptile Relief on my hands and ran them over the snake. I then put the snake in a separate tub while I sprayed his hide and substrate with PAM. I did this for all of my animals. I'm paranoid so I let the PAM dry for about an hour and then put the snake and water bowl back into the tub. I haven't seen him soaking in his water bowl since and it's been about two weeks.

When I sprayed the PAM, I did this in a separate room and left the tubs in that room to dry. As I said, I'm paranoid and refuse to use PAM in the same room that houses my reptiles.