Why this verdict for dogs
Mothballs are concentrated pesticide. Even one can damage a dog’s liver, kidneys and red blood cells — the older naphthalene type is the most dangerous.
Warning signs to watch for
- Vomiting
- Lethargy
- Tremors
- Pale or brown gums
⚠ If your dog ate mothballs
Act immediately — don't wait for symptoms.
- Call your vet or a pet poison helpline right away.
- Note how much was eaten and when.
- Do not induce vomiting unless a professional tells you to.
Poisoning emergencies are expensive
A single toxicity visit can cost hundreds. Compare pet insurance plans that cover accidents and poisoning.
Frequently asked questions
Can dogs eat mothballs?
No. Mothballs are concentrated pesticide. Even one can damage a dog’s liver, kidneys and red blood cells — the older naphthalene type is the most dangerous.
How much mothballs can dogs have?
None — mothballs is not safe for dogs and should be avoided entirely. When in doubt, ask your vet.
Is mothballs safe for cats too?
Verdicts can differ between species. See the cat answer for mothballs →
More household items for dogs
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated June 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List