Odorous House ants are brown for the record and are very annoying to get rid of. They will seek moisture or sweet food, but will most likely not accept ant bait. They also have multiple queens, which means if you spray the wrong product to kill them they will split up and take a queen in each direction, which will make your problem much worse. Not sure what other kind of ants you have in Canada, but if you in fact have OH ants you will have your hands full. GL