Now that Hollywood is in the head lice game, what incorrect facts are they spreading? Recently, on an episode of The Office, the cast was seen with mayonnaise on their heads to kill lice. We, at The Nit Nanny, know that mayonnaise does not kill head lice. People are under the misconception that lice can be smothered with one of these pantry staples – they cannot. Using their spiracles, head lice can shut down their own respiratory system. It is a messy and ineffective treatment. The Nit Nanny Solution will kill lice naturally in 10 minutes.