Outdoor ant problem? Mix two tablespoons of borax with jam, jelly, honey or syrup until there is a paste. Smear some on some paper or a plate and put it where the ants are at. They should flock to it and eat it and take it back to the nest and it will act as a natural ant killer.
Repel ants - Ants seem to hate vinegar. Spray it in cracks, around baseboards, on countertops, or anywhere ants tend to crawl around your house. No need to put poisonous ant traps on your floor that kids or pets could get into.