thanks HOW. I've been spraying everything down with tea tree oil since last night. I've made borax shampoo and tea tree shampoo. Lavender, rosemary and thyme shampoo along with bags for hanging on my daughter's canopy. From what I understand I could easily see an outbreak within another 24 hours if the neighbor had not been so on top of her game. Good thing she is a hair dresser. Just surprised they use so much Mercury to treat head lice.