LOL Bought DE food grade as a bug killer for my chickens. Although i always thought that if this kind of DE can be eaten, how will it kill bugs?? So ive had some test subjects, few ants, a beetle, a fly. and a realllyyyy hugeeeee flying shiny beetle. Dusted some DE food grade on them and even then..they were still alive and kicking likeee. "What? DE food grade on me? When did that happen.. because i barelllyy even noticed it" So how does this actuallyy work? I know that its supposed to like tear up the bugs outer layer, but it did not seem hurt any of these bugs.