Treat lice and their eggs with GoodSense Lice Killing Shampoo, which works fast to kill lice and eggs, and won't leave a chemical residue. The comb(s) included are 100% effective in the removal of eggs and lice from hair.* Step 1 of the Lice Control System. Proven safe and effective to kill lice and their eggs. Helps children return to school lice free.