The Catit Senses 2.0 Catnip Roll-On is an easy to apply, mess free applicator containing high-grade Canadian catnip oil. The roll on allows you to apply concentrated streaks of the appealing catnip scent loved by cats. Apply frequently on cat toys, scratching posts and even fabric to stimulate the cat. About 65% of cats respond to catnip while the degree of sensitivity varies between individuals. If your cat likes catnip, they will start showing it when they are a couple of months old. Size: 50ml Bottle.