I used Terro to deal with carpenter ants a few months ago and it worked very well. There wasn't any food for them out in our house but they were still scouting anyway. For 2-3 days there were an insane number of carpenter ants at the bait stations taking the bait, but then they all just disappeared. My understanding is it has low toxicity for pets, but you could try placing it outside if that's where they are coming from to be extra safe. Keep in mind that if it's inside you have to live with the extra ants for a few days and let them live so they can take the bait back to their nest.
Pest control companies will in addition spray your foundation to prevent the ants from crawling into your home. You can buy some products that you can spray on the foundation yourself at hardware stores. You will probably need to have access to a garden hose and outdoor water supply to use them.
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Date: 2017-07-09 11:18 pm (UTC)Pest control companies will in addition spray your foundation to prevent the ants from crawling into your home. You can buy some products that you can spray on the foundation yourself at hardware stores. You will probably need to have access to a garden hose and outdoor water supply to use them.