There are two main types of
snail baits, and one is considered relatively safe for dogs. Look for the
active ingredient and use the kind that contains 1% iron phosphate. This is
relatively safe for dogs, because there is actually very little iron in the
compound, and what there is, is poorly digested and absorbed by dogs, so most
of it passes through them without incident. That being said, iron phosphate can
still be toxic to dogs if they ingest enough of it: a 40 lb dog would have to
consume about 3 lbs of this bait to receive a lethal dose of iron, although
vomiting and diarrhea can occur with as little as about 1/10 of that amount.
Certain brands of snail bait
contain an active ingredient called metaldehyde. Metaldehyde causes muscle
tremors that progress to convulsions. Dogs can easily die from this poison.
Each spring when the snails come out, we see numerous dogs at our practice that
have ingested metaldehyde that require emergency treatment, including iv
fluids, injections of anti-seizure medication, and a one or two-day hospital
stay. Keep all potential poisons well out of reach of dogs. Pet-safe
alternatives to snail baits with metaldehyde include Sluggo Slug and Snail
Bait, handpicking, and copper barriers.
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