From the number one pediatrician-recommended lice removal brand.* Nix Creme Rinse will kill head lice and eggs (nits) for kids or adults through the use of permethrin, an insecticide that kills lice. First, apply Nix Creme Rinse to head hair to kill lice and eggs (nits) and to prevent reinfestation for up to 14 days after the initial application. Next, remove lice and eggs (nits) from head hair with the Nix Lice Removal Comb. Nix Lice & Bed Bug Killing Spray for Home will kill lice and bed bugs in your home. The bed bug and lice spray is effective for up to 4 weeks and easy to use. Nix lice treatment is trusted by parents and feared by lice. Nix offers a variety of lice combs, shampoos, treatment kits, hair prevention spray and lice spray for furniture and bedding to nix out lice in your home.