No ants anywhere in the house now.

We were plagued with small black sugar ants, coming up from the bathroom floor in the center of the house. Sprays were not effective because, short of ripping up the molding around the flooring, we could not find any points of entry. The little devils were all over the bathroom; in the medicine cabinet, drawers, and bathtub. It was maddening. We plugged in an Ultimate AT, and within 24 hours, the ants were gone! They just vanished! No ants anywhere in the house now. The cats and the dog are not bothered by the repeller, and we did not have to use poisonous sprays. We are very pleased!