This was a new one for me, we were seeing little ants roaming around the kitchen counter occasionally. Finally noticed what looked like dirt falling onto the backsplash right below the outlet, and what looked like something oozing out of the outlet holes. Got suspicious, turned off the breaker, and took the cover off while armed with ant spray. It was FULL of ants! I gave a couple blasts of ant spray, took the switch and outlet out and pulled some masses of dead ants out, but is that just where they happened to make a nest? Hoping the spray discourages them from coming back.