I used PAM once a long time ago to get rid of mites, and now as a preventative, and I would say lay it out in the cage. If it's still in the bag, you won't be evenly treating all the aspen. The mites didn't come in your aspen, they can from another reptile somewhere down the line!! Make sure the water bowl and the snake are not in the cage, and then treat the cage. I think they recommend about 1 second of spraying for a square foot of cage, I just kind of spray it in there. Maybe while you're treating/drying the cage let the snake soak. Just make sure that you don't put the snake, or the water back in there until it's aired out very well and all of the residue has completely dried. It really does work though! When I had to kill some off that a carpet python brought with it, this stuff worked a charm![]()