Are Essential Oils Safe for Cats? Diffuser Guide
Essential oils are natural, but "natural" does not mean safe (cyanide is natural, after all). Cats lack a specific liver enzyme (glucuronyl transferase) required to break down certain compounds found in oils.
The "Danger List" (Remove These)
If you have a cat, you should not diffuse these oils. Airborne droplets land on their fur, they lick them off, and ingest the toxin.
- Tea Tree Oil (Melaleuca): The #1 offender. Causes tremors, coma, and liver failure.
- Peppermint: GI upset and central nervous system depression.
- Citrus (Lemon/Orange): The D-limonene is toxic.
- Eucalyptus: Often used for colds, but dangerous for cats.
- Wintergreen: Contains salicylates (like aspirin), which cats cannot process.
Safe(r) Alternatives
While no oil is "healthy" for a cat to inhale, these are generally considered safe in low concentrations with a window open:
- Jasmine
- Frankincense
- Cedarwood
- Chamomile
Signs of Poisoning
- Drooling.
- Wobbly walking (Ataxia).
- Vomiting (smelling like the oil).
The Verdict on Diffusers
Passive diffusers (reed diffusers) are safer than Active Ultrasonic Diffusers (the ones that shoot mist). The mist actively coats the cat in oil.