My son brought home lice a few weeks ago from school. I've used over the counter treatment on everyone in the house, combing through everyone's hair every day, I've been washing bedding every day.. we have used tea tree oil and shampoo and combed through everyone's hair just a couple days ago and that seemed to help a lot! BUT when I thought I finally got them all, (couldnt find anything yesterday on anybody's heads, not even nits) today I combed through my daughters hair and found MORE adult lice..

Could it be possible that someone in my sons class has them and he just keeps bringing adult lice home? Can someone suggest something that might help? Pls.. weve been dealing with this for weeks and I cant get rid of them!