The Zero In Flea Killer Comb provides safe and effective tick and flea control by killing fleas at all life stages using a harmless electrical charge as you brush your pet's coat. The push button control instantly kills fleas on your dog or cat's coat. This comb delivers a small electrical charge that causes no harm to pets and ensures rapid kill of adult fleas, ticks, larvae, and eggs compared to standard flea combs. It is an efficient method of flea control, as the teeth of the comb kill and remove fleas at adult, egg, and larvae stages to tackle pet flea problems. It is battery-powered, requiring 2 x AAA alkaline batteries (not included) to enable full use. An LED light indicator shows when the comb is switched on. The comb is comfortable to use with push-button control and an ergonomic, fitting design for ease of use. It is a poison- and chemical-free alternative method of control for fleas and ticks as opposed to powders, yet still effective in destroying pests on contact. Safe for use around children.