Top 7 Toxic Things in Our Homes for Cats — What Every Cat Owner Should Know

Cats are curious by nature, and unfortunately, their curiosity can lead to trouble. Many common household items are toxic to cats, causing anything from mild stomach upset to life-threatening emergencies.
At PetMed of Key West Veterinary Clinic in Dubuque, IA, we see too many preventable poisoning cases each year. By knowing the top cat toxins, you can protect your feline friend and avoid an emergency vet visit.
If you think your cat has ingested something toxic, call your veterinarian immediately or the ASPCA Animal Poison Control Center at 888-426-4435.

1. Lilies and Other Poisonous Plants for Cats

Even a small bite of certain lilies — including Easter lilies, tiger lilies, and daylilies — can cause acute kidney failure in cats. Other toxic plants include azaleas, tulips, poinsettias, and philodendrons.
Tip: Before bringing plants home, check if they are safe for cats using a reputable pet poison database.

2. Human Medications Toxic to Cats

Many human drugs can be deadly to cats, even in tiny amounts. Common culprits include:

Acetaminophen (Tylenol) — causes severe liver damage and red blood cell destruction
Ibuprofen & naproxen — cause stomach ulcers and kidney failure
Antidepressants — can cause neurological issues and heart problems

Even a single tablet can be dangerous. Always store medications securely and never medicate your cat without veterinary guidance.

3. Essential Oils Dangerous to Cats

Tea tree, eucalyptus, peppermint, citrus, and many other oils contain compounds that cats cannot metabolize. Ingestion or inhalation from diffusers can cause drooling, vomiting, tremors, and liver failure.
Tip: Avoid using essential oils in any form where your cat can come into contact with them.

4. Household Cleaners and Chemicals Harmful to Cats

Bleach, ammonia, disinfectants, and many floor cleaners can irritate a cat’s skin, eyes, and lungs. If a cat walks through a spill and licks its paws, ingestion can occur. Always rinse and dry treated surfaces before allowing your cat access.

5. Human Foods Toxic to Cats

Several common foods can cause poisoning in cats:

Onions, garlic, chives — damage red blood cells, causing anemia
Chocolate, coffee, caffeine — cause heart rhythm problems and seizures
Grapes and raisins — linked to kidney failure
Alcohol and xylitol — cause dangerously low blood sugar and liver damage

Tip: Keep countertops and tables clear of unsafe foods.

6. String, Ribbon, and Small Objects

Cats love to bat and chew on string, yarn, and hair ties — but if swallowed, these can cause life-threatening intestinal blockages requiring surgery. Always supervise play and store dangerous items out of reach.

7. Insecticides and Rodenticides

Bug sprays, ant baits, and rat poisons are extremely toxic to cats — either directly or when they eat a poisoned insect or rodent. Use pet-safe alternatives and keep all pest control products locked away.

How to Prevent Cat Poisoning in Your Home

Store all medications, cleaners, and chemicals in secure cabinets
Choose only cat-safe plants for your home and garden
Keep foods toxic to cats out of reach
Supervise play with small or string-like items
Call your vet at the first sign of vomiting, drooling, lethargy, or tremors

📍 PetMed of Key West Veterinary Clinic
2262 Flint Hill Drive, Dubuque, IA 52003
📞 563-583-8387
🌐 dbqpetmed.com