Most cats respond to catnip as if it were a hallucinogenic drug of some kind. Yet some cats not only don’t care about catnip, they remain unaffected by it in any way. For those cat owners who want to get their cat high without using catnip, there may now be alternatives.

Back in the 1940s, scientists discovered that nepetalactone is the active isomer that stimulates felines. With that in mind, Sebastian Bol, a molecular biologist, and owner of the Cowboy Cat Ranch in Texas, decided to test out some other plants. Silver vine, Tatarian honeysuckle, and valerian root do not contain nepetalactone but they have similar molecules.

Surprisingly, many cats were stimulated by these other plants as they were by catnip. So if your cat ignores catnip, try Silver vine or Tatarian honeysuckle. Then again, perhaps its’ best not to get your cat high since most cats are hard enough to control when they’re not under the influence of another chemical.

To learn more about the science behind getting your cat high, click here.