The ZappBug heater does work to kill lice on items that are infected with them. Lice die at 130F, and our ZappBug Heater is able to reach a maximum temperature of 150F. Depending on what items are infested and what temperature your home washer/dryer are able to reach you can also treat your items in that – just make sure to run everything on the hottest setting. If you have infested items that are not able to go in either the washer or the dryer, or don’t feel that those units can reach 130F, then I would recommend buying a ZappBug.