tea tree oil is good they dont like that i also used to use the conditioner treatment everyday for a week combing them out of all the kids hairs ( very time consuming when theres 7 kids plus you and o/h) as treated them all even if someone didn,t have even me and o/h were treated it did work but you have to persevere with it also tie hair up whilst at school that also helps been a while since mine had them as it seamed to occur mostly at infant school