I think all the snakes I have had and seen would look at me as if I were on drugs if I offered them a fuzzy (they only seem to accept hopper+ for me)

Also you want the prey item to be warmer than you and than the environment. As balls need 80-90 degree surroundings on their warm side they need prey that is mid 90s and up, I find that one of my girls will only strike if the prey item is around 102.