Where would a dog or cat be likely to encounter arsenic around the house?

A dog or cat is likely to encounter arsenic in ant baits because some formulations contain this toxic substance as an active ingredient to attract and kill ants. Pets are naturally curious and may be drawn to the scent or taste of these baits, leading to accidental ingestion.

While other items listed, such as de-icer crystals or certain anti-mildew paints, pose their own risks for pets, they are less commonly known for containing arsenic. Silver polish and snail baits may have toxic components as well, but ant baits are explicitly known for including arsenic, highlighting a direct risk for pets in the home.