All hazards › Essential Oils › Lemongrass Oil & cats

Is Lemongrass Oil Safe for Cats?

🚫 Not Safe
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just ate or touched something and looks unwell, skip the reading and call your vet — or Pet Poison Helpline (US): (855) 764-7661, ASPCA Poison Control (US): (888) 426-4435.
Not safely. Lemongrass oil can sicken a cat through grooming, skin contact, or heavy diffusion, and cats are far more sensitive than dogs.

Why it’s a problem

Lemongrass oil contains citral and other terpenes that cats clear poorly because they lack glucuronyl transferase. Exposure through grooming licked-off oil or inhaling concentrated mist causes gut and airway irritation. Even lemongrass plants can upset cats that chew them.

How to keep your pet safe

Never apply lemongrass oil to a cat or anything it grooms. If diffused at all, use a few drops briefly in a large, ventilated room the cat can leave. Store the oil in a closed cabinet.

Warning signs to watch for

Drooling, vomiting, lethargy, unsteadiness, coughing or labored breathing after heavy inhalation, skin irritation

When to call the vet

Call your veterinarian or a pet poison hotline if your cat was exposed and shows symptoms. Wash any fur contact with mild dish soap so it cannot be groomed off.

Common questions

Is diffusing lemongrass around my cat safe?

Only brief, passive diffusion in a big, ventilated room is lower risk, and the cat must be able to leave. Cats lack the enzyme to clear its terpenes, so never apply it to the cat or use enclosed diffusion.

Lemongrass oil is used to deter cats. Is it harmful?

The aversion is real but so is the hazard. Oil residue on floors or fur can be groomed off and make a cat ill. Use physical barriers instead.

More essential oils hazards for cats

🐱 Tea Tree Oil☠️ ToxicNo. Tea tree oil is among the most dangerous essential oils for cats — cats lack the liver enzym🐱 Lavender Oil🚫 Not SafeNo. Lavender oil is unsafe for cats — milder than tea tree, but a cat’s liver cannot clear its c🐱 Eucalyptus Oil☠️ ToxicNo. Eucalyptus oil is toxic to cats because they cannot break down its terpenes in the liver.🐱 Peppermint Oil☠️ ToxicNo. Peppermint oil is toxic to cats, whose livers cannot process the menthol and other terpenes 🐱 Wintergreen Oil☠️ ToxicNo. Wintergreen oil is toxic to cats, combining aspirin-like poisoning with terpenes their liver🐱 Pennyroyal Oil☠️ ToxicNo. Pennyroyal oil is severely toxic to cats and has caused fatal liver damage even in small amo

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate or touched something concerning, contact your veterinarian or a pet poison hotline right away. In the US: Pet Poison Helpline (855) 764-7661, ASPCA Animal Poison Control (888) 426-4435 (fees may apply).