I like to see to believe so I got some earthworms and i put a cup of water in a jar also one worm (parasite) I put my 2 hand holds from my zapper in there and after the complete cycles The worm is still alive like the day it was born,, NOT GOOD Any one got any input on this , I sure dont want to waist time zapping if the things dont kill FEEL free to try this experiment also ,,you could really use any kind of bug,, gross yes but i need proof