The Licenders Natural Lice Removal Treatment incorporates the LouseBuster™ device. We use no pesticides or other chemicals - only carefully controlled heated air on dry hair. Almost all prescription and over-the-counter lice medications sold today for treating head lice contain pesticides or other chemicals, many of which have the potential to cause irritating skin reactions or other harmful side effects. Unlike these products, the LouseBuster™ device uses only controlled, heated air, so it is very safe – even when used to treat people with asthma and those who have previously experienced side effects from other head lice treatment products.