Nitty Gritty Nit Free Comb 1comb It's a small, stylish item which does something rapidly and easily that no-one thought could be done at all. Requirements no batteries.Our remarkable, award-winning Nitty Gritty Comb rapidly and easily gets rid of not only head louse and unpleasant nits (empty egg cases) but also extracts 'live' head louse eggs before they hatch. Instead of nasty chemicals, it gets the job done using advanced design and old-fashioned sound judgment. We are really happy of it, and if you don't think it's the finest head louse item you've ever tried, we'll happily offer you a full refund. At any time. That's how good it is.