Aunt Problem? Not that one – ANT.
Sprinkle cayenne pepper in doorways, window sills, or any other point of entry about once a month. When the leader of the “recon” troop picks up the scent, the soldiers will do an abrupt “about face”. No pepper? A line of chalk, flour, sage, or salted cucumber peelings (??) also work. For some reason, they won’t cross it.