head lice
"I used the product twice. I coated entire head as directed and let it sit for 40 minutes. The second time, I used a tube and a half and made sure it stayed on my head for the same time - far longer than the required 10 minutes before rinsing out, and didn't wash hair for two days. After both uses, I still felt itching, crawling. And this after going through the lice song and dance routine (washing, sterilizing everything I have ever come in contact with, passed by, looked at, breathed on, thought about, replacing combs, accessories, etc, etc, etc.). Several nits were found in my hair after this. My daughter did the same with her family. I pulled live lice from her hair last night. "