As explained in our CARPENTER ANT CONTROL article, these ants do nothing but forage around all day looking for food and working on their nests. I suggest you read the article which will provide a lot of insight to this ant as well as some practical things you can do to minimize this activity. I do suspect there is a nest either on the home or close by based on how much activity you said you see. But I have seen where they could be this active and still be living off the property.

As you'll learn in our article, there is usually a few things needed to control most infestations. That being said, your activity can best be controlled by baiting and spraying. Apply some MAXFORCE GRANULES to the yard which should cut down on the foraging. Next, spray the foundation with the TERMIDOR CONCENTRATE. This will provide much needed protection in case they are currently accessing the home in some location you cannot see. The way Termidor works, you'll be able to effectively control any nest on or in the home whether you know where it exists or not.