Nitty gritty nitfree comb is a revolutionary comb effectively removing and destroying lice eggs unhatched lice and nits empty hatched egg shells quick easy to use and chemical free the comb removes and destroys 100 of all lice and eggs with its patented micro grooved steel teeth these special teeth run through any kind of hair smoothly and safely to avoid cutting or pulling the hair and the teeths rounded ends penetrate all the way to the scalp to remove even the tiniest nit quickl