Wasps were entering the house through a vent under the overhang. AR Pest Control came on a weekend the same day at the time they told us. They were courteous and checked the entire perimeter of the house first. They took off the vent screen and sprayed the area with two types of chemicals. They removed the nest. They then added a fine mesh screen to the existing screen. We were billed the quoted amount and provided with a six month warranty. We won't hesitate to use them in the future if necessary.