I don't know what it is about catnip, but I have yet to have a cat that isn't obsessed by the essence of catnip. Growing your own is easy and entertaining, as well. If you want your cats to quit chewing on your houseplants, grow some catnip. They'll be much more apt to chew on it than your plants.

Pros: Inexpensive, healthy, entertaining

Cons: Need to water

Catnip seeds can be planted in the garden and the plants harvested and dried in the fall. Ours always reseed even with harvesting the plant. If you have a garden and have cats, its a fun way to make your cats happy.

Pros: easy to grow, inexpensive way to have lots of catnip onhand

Cons: none

my cat loves it, and she cant get enough of it. she keeps up with it for hours even though she is an old cat. i think it helps her live longer

Pros: it keeps my cat busy for hours

Cons: if she chews through what i put it in its real messy