DD1 (5) has had reoccuring head lice ever since starting in reception. We try and keep on top of it through nit-combing with conditioner every couple of days however I am not convinced that this is completely getting rid of them. We have tried various over-the-counter products which seem to work for a couple of weeks then they are back again. I am reluctant to keep using these and have heard that tea tree oil really keeps them at bay. Does anybody have any experience of this, does it work? How often do you need to do it and how do you use it?