Is it true that head lice are starting to become resistant to pesticides?
It is possible that head lice are becoming resistant to certain treatments for head lice, but to date, nothing has been proven. To prove such claims, a large, carefully controlled study would need to be undertaken. Such a study would be costly and difficult to conduct. Usually such a study would only be conducted as a way of proving the viability of a new treatment before such new treatment would be made available to the public. Few people would be willing to pay lots of money to prove a treatment no longer works. Even those serving the interests of Public Health would find it difficult to secure funding especially when theyre dealing with so many other issues that are equally or more important. This question might one day have a better answer, but right now it seems the best advice is to cease using head lice treatments that claim to kill.
