Each toy comes with a tube of catnip to keep the pawty going! 'Nip has a calming effect on dogs. It relaxes them to a place of peace and tranquility they all crave. We've perfected a really great delivery system for our 'nip with our fun refillable toys made for pawtiers! Dogs don’t have a euphoric response from catnip like cats do. Instead, it is a calming agent when eaten and a great way to encourage your dog to play longer through scent! Grown in the USA, our catnip plants are safe, pure, and 100% organic. Not all dogs respond to catnip, but many do and it usually takes about 30 minutes to see a reaction. Doggijuana is a non-addictive catnip. There are no added ingredients that are harmful for your pet. Dogs go crazy for catnip because, like cats, they have catnip receptors in their faces and stomachs.