if you know where they are getting into the house you can put a little pile of cornmeal outside. the ants will pick it up and bring it back to the nest for everyone to eat. the cornmeal expends in their stomach and they cannot digest it so it kills them. cornmeal is safe for kids and pets. i'd just sprinkle it around outside where you see ant hills and you can sprinkle some on the counter or corner where the ants go. it takes a few days for them to take it back, eat it, and die i think.
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