Many families become frustrated because other treatment options don’t work. There is some evidence that some lice - known as super lice - have developed resistance to certain products. Sometimes the products are misapplied. To the untrained eye, it can be difficult to identify nits, or tell them apart from dandruff. And it is easy for parents to miss lice and nits in the combing process. Our approach has been developed from experience with hundreds of families, and we are confident that you will be lice-free and satisfied.