PAM is needed to kill eggs and the critters moving around in the enclosure. But if they are all over ur snake, I like mite off cuz it can be used to kill the ones on ur snake. When I bought my first one I sprayed her cage and bedding, while that was drying and airing out I used the mite off on her entire body and some q-tips soaked in mite off to dab her face and heat pits. The critters in her heat pits died and were washed away with water. She was happy immediately and the mites were gone before the second treatment.