Is Cats Safe?
Is Tea Tree Oil (Melaleuca) Safe for Cats?
No — Tea Tree Oil (Melaleuca) is toxic to cats.
Tea tree oil (Melaleuca) is toxic to cats due to the terpenes it contains. Even small amounts can cause serious neurological and physical effects, so any exposure should be treated as an emergency and a vet contacted immediately. Never use products containing tea tree oil on cats, including those marketed as natural flea treatments.
| Scientific name | Melaleuca alternifolia |
|---|---|
| Category | Essential Oils |
| Toxic principle | Terpenes (terpinen-4-ol, 1,8-cineole); as little as 7 drops of 100% oil has caused severe poisoning (Pet Poison Helpline; Khan et al. JAVMA 2014) |
| Also known as | tea tree, melaleuca, tea tree essential oil, melaleuca oil |
Signs to watch for in cats
- Hypothermia
- Weakness
- Ataxia
- Tremors
- Hypersalivation
- Coma
- Onset 2–8 h. Never use 'natural' flea products containing it on cats
If your cat may have been exposed to Tea Tree Oil (Melaleuca):
- Don't wait for symptoms; don't induce vomiting unless a professional tells you to.
- Note what and how much, and take any packaging with you.
- Call your vet or a 24/7 line now — Pet Poison Helpline 855-764-7661 · ASPCA 888-426-4435.
Browse all Essential Oils for cats · or check another item.
Frequently asked questions
Is Tea Tree Oil (Melaleuca) toxic to cats?
Yes. Tea Tree Oil (Melaleuca) is reported toxic to cats by Khan et al. JAVMA 2014; Pet Poison Helpline; Merck Vet Manual. Keep it away from your cat.
What are the symptoms if a cat is exposed to Tea Tree Oil (Melaleuca)?
Reported signs include: Hypothermia, Weakness, Ataxia, Tremors, Hypersalivation, Coma, Onset 2–8 h. Never use 'natural' flea products containing it on cats.
What makes Tea Tree Oil (Melaleuca) toxic to cats?
The harmful component reported for Tea Tree Oil (Melaleuca) is Terpenes (terpinen-4-ol, 1,8-cineole); as little as 7 drops of 100% oil has caused severe poisoning (Pet Poison Helpline; Khan et al. JAVMA 2014). Cats metabolise many such compounds poorly, so even small exposures can cause problems.
How much Tea Tree Oil (Melaleuca) is dangerous to cats?
There is no established "safe" amount — sensitivity varies by cat, and small exposures can still cause signs. Treat any exposure as potentially serious rather than waiting to see how much was involved.
What should I do if my cat ate Tea Tree Oil (Melaleuca)?
Contact your vet or a 24/7 animal poison line right away: Pet Poison Helpline (855-764-7661) or ASPCA Animal Poison Control (888-426-4435).