Is Cats Safe?
Is Diatomaceous Earth (pool/filter-grade) Safe for Cats?
No — Diatomaceous Earth (pool/filter-grade) is toxic to cats.
Diatomaceous Earth (pool/filter-grade) is listed as toxic to cats by IARC; industry data. Cats metabolise many plant and chemical compounds poorly, so keep Diatomaceous Earth (pool/filter-grade) away from your cat and treat any exposure seriously.
| Category | Household |
|---|---|
| Also known as | pool grade de, filter grade diatomaceous earth, calcined de |
Signs to watch for in cats
Heat-calcined to 60–70% crystalline silica — an IARC Group 1 carcinogen by inhalation that causes progressive, irreversible lung damage. Looks almost identical to food-grade in the bag; check the label. Do not use in the home.
If your cat may have been exposed to Diatomaceous Earth (pool/filter-grade):
- 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.
Cat-safe alternatives
Browse all Household for cats · or check another item.
Source: IARC; industry data ↗
Frequently asked questions
Is Diatomaceous Earth (pool/filter-grade) toxic to cats?
Yes. Diatomaceous Earth (pool/filter-grade) is reported toxic to cats by IARC; industry data. Keep it away from your cat.
What are the symptoms if a cat is exposed to Diatomaceous Earth (pool/filter-grade)?
Reported signs include: Heat-calcined to 60–70% crystalline silica — an IARC Group 1 carcinogen by inhalation that causes progressive, irreversible lung damage. Looks almost identical to food-grade in the bag; check the label. Do not use in the home.
What should I do if my cat ate Diatomaceous Earth (pool/filter-grade)?
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).