Catnip and SilverVine, are natural herbs that contain harmless "nepetalactone" and "actinidine", It can help cats soothe their nerves, remove hair bulbs, and promote digestion; When a cat encounters our catnip toy, it will flip, jump, swoop and chase, which is very interesting for cats, even drooling, because catnip and silver vine can release a smell that resembles feline animal hormones, Which makes the cat become excited when it is in heat. This is a normal phenomenon and the cat will recover within 20-30 minutes; The combination of silvervine stick and catnip ball will be more attractive than other toys.