Is this ants or termites?
I agree with Steve. Ants for sure, maybe pavement ants. You can find several pesticides at DO MY OWN PEST CONTROL. I worked in pest control for 17 years. A Termiticide / Pesticide called Termidor SC will get rid of them for sure. Kinda pricey but it's a concentrate. 

You'll probably pay more for a pest control company to do it. Do it yourself. One Ounce per Gallon of water mix should do it.  Just follow the label instructions on the bottle.