That is big business and a lot of money for pest control if it is handled properly. Fire ants and elderly are important business. In fact, fire ants are a serious problem in all kinds of health care facilities. Have you thought about your liability if your claims are vague. But most pest control operators are not roaming the grounds trying to treat the lawn for fire ants.
Fire ants build their nests in the lawn or sometimes in debris on the flat roofs of buildings.
They then forage to food sources by laying down a pheromone trail between the nest and the discovered food. If an ant first finds food in a room on the 3 rd floor, they will not investigate any of the other rooms and will forage to the 3 rd floor room until the food source is depleted. If the food source is an elderly person lying in a coma, that may be a law suit waiting to happen. Fire ants also fall between the cracks from the standpoint of pest services. And the pest control company that treats lawns does not guarantee structural protection for ants invading from the lawn.