Lice

 
Coconut, Neem & citronella work well in lice rejection - http://www.academia.edu/913321/10_Head_lice_repellents
Paw paw, thymol and tea tree oil kill lice eggs  www.alternativemedicine.com  9/03
Rosemary http://www.triedtastedserved.com/dried-herbs/dried-rosemary-leaves.php 
"Rosemary may...be used in the prevention and treatment of head lice."