Have you ever heard of parasitic wasps? I bought some and released them to help me with hornworms....my son and I discovered that we couldn't find a hornworm that WASN'T paratisized!!! The wasps lay the eggs on the juicy caterpillar, and when they hatch, they devour their caterpillar host....pretty gory. My son insisted on keeping one in a box to watch the process and it was like a horror film.
