My kid got head lice from a classmate who went to Mexico, and we played hell trying to get rid of them. We are normally clean-freaks, and we cleaned and washed everything, and it still took a while to kill them. Get Nit and don't believe the stupid misinformation on the internet. My wife was washing my kid's hair with everything from Listerine to orange Oil, and nothing worked like Nit. It was the worst kind of hell I wouldn't wish on anybody.