"TMC" wrote in news: snipped-for-privacy@bt.com:
Get a small container of boric acid or borax if no actual b.a. avail, and sprinkle /lightly/ all over the carpets and under and around seats.
Washing all the floors, carpets and seats and cleaning out stuff from under the seats etc would not hurt either. Ants look and if they find nothing they move on, unlike humans.