carole
This sounds familar... It could be that one of your kids is sitting near a child who is not being treated. I think these little critters can jump something like 20 feet. All it takes is one child in a class to reinfest a whole room. I would go to the school or schools that your kids go to and tallk to the health nurse. All the kids in the classes need to be checked. Remember to wash stuffed animals, scarves, and any soft of fabric hair holders like those bands that so many kids where. Tea tree oil is a good way to kill them and it is non toxic. This can be found in any health food store. You can add it to your shampoo or buy shampoo with it in. It also acts as a natural repelant form many little bugs including fleas and mosquitos. Good luck.