GIGwi Refillable Catnip Mouse Natural Cat Toy uses only top quality natural catnip to stimulate playful behaviours in cats and kittens. These toys have a special fastener so that fresh catnip teabags can be added again and again - to last all your cat's nine lives. Catnip is a natural, non-addicting herb that encourages playful behaviour for about 70% of cats, which have an inherited gene that compels them to respond to catnip. Included ziplock bags maintain maximum freshness and keep your extra catnip in necessary conditions until needed. Simply sit back and watch your kitty tosses, flips, kicks and enjoys its GiGwi catnip toy.