These ants are correctly named as you tend to see them in the cracks in your driveway, building their mounds. Other places you might see them is in your basement or anywhere where their might be soil exposed under rock or concrete. Their colonies can have many queens and tend to be the biggest in the summer. They mainly eat what they have outside but can find thee way into your home if there is food left about. They tend to be light to reddish brown and more of a nuisance and eye sore than anything. They can sting and cause slight irritation if threatened.