Nunbell Catnip Ball Toy is made of catnip. Catnip is a mint-based herb that is given to cats. It is a non-toxic non-addictive herb that contains a substance called nepetalactone, sensitive to cats’ opioid systems. This causes a euphoric “buzz” in the cats which lasts for around 10 minutes, and you will observe your adorable feline acting peculiarly funny. Nepetalactone also helps in maintaining a healthy digestive tract, by killing insects and mites. The best way to feed your feline children is; dried catnip in small amounts as appreciative treats!