Do you have any idea why you have ants? Only one person I know has ever had ant problems in their car. And that was primarily because they always had a dirty car . . . you know sports equipment, food wrappers, empty drink containers, etc. After years of this, I guess he got unlucky parking too close to an ant hill, but after that he had a massive ant problem that year until winter rolled around. I guess they couldn't handle the cold winter and time spent primarily between Toronto, Ottawa and Montreal.