Anytime is the right time for catnip (Except if they are eating) Even my non-playful 14 yrs old loses 10 years If I place some catnip in front of her. I noticed the cat nip toys in petstores are weak and are only fun for a minute where as compared to pouring fresh catnip all over their toys or furniture. The BEST place to get catnip for 25 cents a toy is www.GiddyKittyToys.com , you dont have to buy in bulk and the catnip is rozen until recieved. It's real good stuff!! Happy stuff!!