Why in the heck would you even be speaking to the HSUS? They care NOTHING for the welfare of the animals, they only want examples like yours so they can pass more laws making the owning of animals illegal.
In answer to your question on no-pest stripes however, the answer is 'it depends'. No-pest strips contain a poison, that's what kills the insects, ANY insecticide in too high of a concetration can cause neurological problems and death in higher animals. However, before the invention of Provent a mite or Black Knight, one of the accepted treatments for mite infestations was to use small strips of no-pest strip (about a 1" X 1" size) inside a small perforated plastic container placed inside the snakes cage. You left the small chunk of no-pest strip in the cage for about a week, then removed it for a week, then put it back for a week etc... until your mite problem was gone. In small amounts, this was not harmful to the snake but it did kill the mites. If you placed an entire no-pest strip inside the cage, then yes you would probably kill or cause serious damage to the snake.