Resorting to Chemicals
My housemate treated his dog for fleas, so they high-tailed it to my bed, where they persisted for two weeks, despite frequent vacuuming, tea tree oil, garlic, incantations to the flea god, and general hysteria. Then I tried adult-flea killer, which doesn't hang around very much, but that did nothing. So now I have my sheets and comforter positively soaked in Raid. At least I can sleep through the night.