insecticide, n.Trivia

Major city birds have learned to line their nests with cigarette butts to ward off parasites. Burnt nicotine serves as an insecticide, repelling lice, mites, and fleas.

Bats eat so many insects, they save U.S. farmers an estimated $3. 7 billion a year on pesticides.

Cockroaches are becoming immune to insecticides.