Kitti (1 1/2 yr.) does not like catnip filled toys. She never has. She loves catnip when you pour a small amount onto the floor though. She will sniff it, roll around on it and just have a blast. She goes nuts for the catnip bag when i have it out to pour some. When she was younger she would grab the bag while in my hands and stick her whole head into the bag. lol. It was so funny to watch her!
So don't give up on catnip just yet. Maybe they just don't care for the stuffed toys.Or maybe they will like it moreas they get older.