You weren't joking: > There were significant reductions in C. lectularius population size and fecundity in insects that fed on blood obtained from human study

You weren't joking: > There were significant reductions in C. lectularius population size and fecundity in insects that fed on blood obtained from human study subjects up to 96 hours after they have consumed a single oral dose of ivermectin. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901371/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901371/