You bought the catnip. You sprinkled it on the scratcher, rubbed it on the toy mouse, maybe even tried the spray. Your cat sniffed it, gave you a look that could only be described as unimpressed, and walked off to sit in a box.
If that's you, take a breath: your cat is not broken, and neither is your catnip. Roughly one in three cats simply doesn't respond to it at all. That's not a personality flaw or a sign they're stressed. It's genetics. And the good news is that most of those cats go wild for something else — you just haven't met it yet.
Why some cats shrug at catnip
Catnip's magic ingredient is a compound called nepetalactone. When a responsive cat sniffs it, you get the classic show: rubbing, rolling, drooling, the thousand-yard stare. But the response is inherited, and a meaningful chunk of cats never got the gene for it.
The best study on this is Bol et al., 2017, published in BMC Veterinary Research. The researchers offered 100 domestic cats four different plant materials and watched what happened. Only 68% responded to catnip — meaning about one in three didn't. Very young kittens also tend not to react yet (PetMD), so if you tested catnip on a tiny kitten and gave up, it may be worth another go now.
So if your cat ignores catnip, they're in good company. About a third of the cats you've ever met are right there with them.
The plant that reaches most of the "catnip-immune" cats
Here's the part the catnip-only pet aisle doesn't tell you. In that same study, the plant with the highest hit rate wasn't catnip at all. It was silvervine (Actinidia polygama, also called matatabi), a climbing vine from the mountains of Japan and China. 79% of the cats responded to it.
More importantly for you: of the cats that did not respond to catnip, almost three-quarters responded to silvervine. Different plant, different mix of compounds, different lock-and-key. A cat that's indifferent to one can be head-over-heels for the other.
Silvervine usually shows up in two forms. There's a powder made from the dried fruit galls, which is very potent and best used in tiny pinches. And there are the sticks — dried pieces of the vine itself, which cats chew, lick and rub their faces on. The sticks are the gentler, longer-lasting version, and for a cat who chews on cardboard, cords or your fingers, they give that urge somewhere better to go. (New to them? Here's how to offer a silvervine stick for the first time.)
If you're wondering why cats do this at all, researchers have a lovely answer. A 2021 study in Science Advances (Uenoyama et al.) found that when cats rub against silvervine and catnip, they coat their fur in compounds that repel mosquitoes. The rolling and face-rubbing that looks like pure bliss is, at least partly, an ancient bit of self-care. Your cat is doing pest control and having a great time about it.
Two more to try if silvervine is a miss
Silvervine catches most cats, but not all. Bol et al. also tested two others worth knowing:
Tatarian honeysuckle (Lonicera tatarica) worked on about half the cats in the study. It's sold as wood blocks or shavings, and it's a reliable fallback for the stubborn few. Only buy honeysuckle that's specifically sold for cats — some other honeysuckle species are not safe for them.
Valerian root got a response from just under half. It smells, frankly, like old socks, and some cats adore it. Fair warning: it can make a cat energetic rather than mellow, so it's a daytime play thing, not a bedtime one.
A practical note on all of these: they are enrichment, not treatment. They give a bored or busy cat something absorbing to do, and that's exactly what they're for. If your cat's behaviour has changed suddenly — new chewing, new restlessness, changes in appetite — that's a conversation for your vet, not a plant.
How to test what your cat likes (without buying six things)
Cats are individuals, so this is a bit of an experiment. A few things make it a fair one:
- Offer it when they're relaxed and curious, not right after a meal or in the middle of a nap. Late afternoon, when most cats start to stir, is a good window.
- Give it a real chance. Some cats need a couple of exposures before they respond. Leave a stick out for a day or two rather than judging on the first sniff.
- Don't stack the deck. Offer one plant at a time, a few days apart, so you can tell which one is doing the work.
- Watch for chewing, not just rolling. Some cats don't do the dramatic floor-flop but will quietly gnaw a silvervine stick for ten minutes. That still counts, and for a chewer it's the best outcome you could ask for.
If you'd rather not run the experiment one product at a time, this is where our Chewer's Variety Kit ($34.99) earns its place. It bundles five natural silvervine sticks with a two-pack of fishbone chews that combine catnip and silvervine — so a cat who ignores one plant gets a shot at the other in the same box, and you find out in a week what would otherwise take three separate orders. It ships free (it's over our $30 threshold), and it's covered by our 30-day happiness guarantee, so if your cat turns out to be the rare one that shrugs at everything, you're not stuck with it. One honest note: we ship from overseas, prepared with care, so allow about 2–3 weeks for it to arrive.
The short version
Your cat isn't weird for ignoring catnip. About a third of cats do. Silvervine reaches most of the rest, and honeysuckle or valerian pick up a few more. The rolling, rubbing and chewing isn't just for fun — it's an instinct with a real purpose — and giving it an outlet is one of the easiest ways to make an indoor life richer.
And if you've got a dog in the house who's feeling left out, we've written about their version of "give the nose a job" in Snuffle Mats 101.
Try one plant this week. Then come tell us which one your cat picked — we keep an unofficial tally, and silvervine is winning. Not sure where to start? Take our 30-second quiz and we'll point you to the right enrichment for your cat.
MellowPaw shares general pet-care information, not veterinary advice. Silvervine, catnip, honeysuckle and valerian are enrichment, not treatments — if your cat's behaviour changes suddenly, please consult your veterinarian.
