From what I understand, you spray the pam into the tub and it dries on everything (except water bowl and snake removed). Then it will kill the mites and newly hatched ones for 30 days.

Now, to check for mites, I use paper towels instead, white, easier to see black specs...
So, as vs. someone that uses aspen that is just spot cleaned, that means the 30 day effect is wasted when I change the paper towel? I got to pre treat any paper towel I put in there with pam every time the snake pees, for a month?

Also, I always feed in tubs they live in. So if the pam already dried, I can just let the snake eat on the treated substrate, paper towel etc?