We frequently get asked this question in the lice removal clinic and the short answer about short hair is YES. Lice live on the scalp and can survive on a host with less than 1/4″ of hair length. We have treated countless dads, grandpas, and brothers throughout the years and all of them are genuinely surprised when we pull a louse or nits off to show them that they are infested. I’ll never forget the time I treated a dad who was actually bald and only had hair on the back and sides of his head… bugs galore! So, we always strongly recommend that you get your whole family screened to prevent any chance of reinfestation within your home AND to get our 60 day guarantee on all removal services.