In our district (and county), they no longer send kids home with live bugs! Something about discrimination for a common illness...blah, blah, blah. Ummm... it's contagious.
I do use a magic lice repellent spray to help keep those nasty pests far away from me (and my own kids). It's called Fairy Tales Rosemary Repel Leave-In Conditioning Spray. We've been using it at my house for 4 years. I give my kids one squirt on their hair (and one on mine) before we leave the house in the morning. If they are going to a friend's house to spend the night, I spray it on their sleeping bag and pillow (call me whatever you want).
So far, bug free (and happy as can be).