It's imperative to keep dogs and cats away from lawn and yard chemicals, which are extremely hazardous. Pets are exposed to a higher percentage of chemicals because of their size. Cancer is the leading cause of death in pets and lawn pesticides and herbicides can be a factor.
Cats lick themselves and their paws, so they ingest whatever is on their paws.
Find natural alternatives to chemicals. 'EPA-approved' chemicals are not always safe --their adverse effects are not always evident until years after exposure has occured.