The Feliway Classic 30 Day Starter Kit Calming Diffuser for Cats is a purr-fect way to help your furbaby feel comfy and secure in your home. Feliway is a drug-free solution that helps to reduce signs of stress in cats, including scratching, urine spraying and hiding. It mimics the pheromones that your kitty naturally produces, helping to restore harmony in your fur fam. Just position the diffuser where your cat spends most of his time.