Feline Boric Acid Toxicology

Boric acid, found in Borax, is toxic to felines when ingested. Boric acid also comes in some flea treatments (both on a pet and in a flea-infested environment), and is used as an industrial cleaning agent. Use extreme caution whenever using boric acid. It has a toxicity rating with the Environmental Protection Agency.

  1. Boric Acid Functionality

    • Boric acid inhibits the growth of molds, acts as a deodorizer and can remove stains. As a pesticide, boric acid functions as a stomach poison and breaks down an insect's exoskeleton.

    Toxicity

    • Since boric acid comes in powder form, regulators consider it to be an eye and respiratory irritant. You should use gloves and face masks whenever using boric acid to avoid injury. The U.S. Environmental Protection Agency considers boric acid to have oral and dermal toxicity. Boric acid is lethal in doses as small as 5 grams.

    Dangers to Felines

    • Because boric acid is toxic when ingested, it is especially dangerous to cats. Since felines groom themselves by licking their fur, they are more likely to accidentally ingest the poison if it has been applied as a flea treatment.

    Poisoning Symptoms

    • Boric acid poisoning can cause symptoms ranging from diarrhea and vomiting to muscle weakness and seizures.

    Treatment

    • Unlike other poisons, boric acid cannot be neutralized or absorbed with activated carbon. The only way to treat boric acid ingestion is through dialysis. If you suspect that your cat has ingested boric acid, contact a veterinarian immediately.