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. And in most cases, knowing where their nest is located can be a big help in getting a quick resolution to the problem. 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. Lastly, if you start seeing any inside the home, use the PHANTOM AEROSOL. It works like the Termidor and can solve problems even when you don't know where the nest is located.

Here are direct links to the information and products listed above:

Carpenter Ant Control:  http://www.carpenterants.com/carpenter-ant-control

Maxforce Granules:  http://www.bugspraycart.com/bait/granule/maxforce-gran

Termidor:  http://www.bugspraycart.com/insecticide/liquid/termidor-sc-20-oz

Phantom:  http://www.bugspraycart.com/insecticide/aerosol/pt-phantom-17-5oz

Since you know where the nest is located, you should consider using the Drione dust featured in our Carpenter Ant article. This dust acts like a dessicant and is both fast working and extremely effective on carpenter ants. If you don't want to use this product, you can switch out to Diatomaceous Earth. It too will act as a desiccant and as an organic material is about as safe of a product that can be used.

Around the home and garage you should apply some Suspend or Cypermethrin to insure any stragglers don't relocate and start a new nest. The organic equivalent would the ECO IC Concencentrate. Using all natural ingredients, this product won't last long like the other concentrates but it will offer a residual that should last 1-4 weeks. Most importantly for you, it will be completely safe to use around the pets and family members. All our organic products can be seen at Non Toxic Pest Control.

Knowing where the carpenter ant nest is located usually helps a lot when treating a local carpenter ant infestation. At this point I can't say that you have a nest inside the home or not. But if you are seeing as many as you state, chances are high that you do have a nest on the premises. I suggest two things.

First, apply some of the Carpenter Ant Gel we have listed in our Carpenter Ant article. Any ants foraging into the home will surely find the offering, feed and die. If some make it back to the nest, you'll probably kill the nest too. This would be ideal.

Second, to make sure you don't keep getting new ants foraging on the home, apply some Suspend to the outside perimeter of the building. Apply the product with a good Pump Sprayer to insure you get a barrier in place to stop foraging ants. Use this material every 2-3 months during the spring, summer and fall and you should be able to keep the ants outside and out of your house.