I've presented the art of zombifying before, and I think how wasps use cockroaches for larval food. New research shows how the larvae contend with the awful bacterial bugs in cockroaches. They secrete antibiotic saliva on the cockroach before feasting! Those saliva molecules may turn out to be new antibiotics for us to use!-http://blogs.scientificamerican.com/science-sushi/2013/01/07/parasitic-wasps-master-microbiology-on-addition-to-neurochemistry/?WT_mc_id=SA_DD_20130108