The sprayers are cordless and refillable, so you fill them with the solution you already use and mist door handles, desks, car interiors and luggage. The thermometers read without contact, which makes them easier to use on a sleeping child. Neither is a substitute for professional medical advice, so follow the manual for correct use. By shipping directly from our manufacturing partners, Blacksheep makes household health kit available at up to 55% off standard retail prices. Read less