Name 3 pests that feed on food wastes if they are not properly disposed of and why are these pests dangerous to man?

Rats, Pigeons & flies. They may not be dangerous themselves, but they are vectors of disease or can also host other vectors. fleas on rats caused the plague that almost wiped out Europe & they all love dumpsters. Pigeon droppings have parasites & they are loaded with mites. Flies I can write a book about, but think about how they eat.