The newest prescription pediculicide (lice killer) is Sklice. Outlined below are the results from their clinical study which they consider a success. The issue is that 14 days after the medication was used, only 76.1% of the users were lice free. When a person comes to Lice Be Gone, we consider the treatment a success if they are nit and lice free after just one treatment. While there are live lice, that person should be considered contagious. At Lice Be Gone, we consider a treatment to be successful when every nit and louse is removed without the use of any chemicals.