lice can only live where their is dirt enough and that dirt is internal, not just their dirty cloths. the amish are naturally plagued with such creatures. many herbs aid, deworming does wonders, anything you do to cleanse your blood of undigested food works. the anointing ol formula most likely would drive them away from the scalp, but that may lead to itching other places. i suggest pure oregano oil total 1 drop daily mixed in olive oil to suit or other liquid, apply direct to scalp as well as swallow every day 6 days a week as needed. side effects are wonderful, you may forget where the doctors work.