A carpenter ant problem and a pharaoh ant problem call for different tools entirely, and treating them the same way is why so many DIY attempts fail. Any sign of carpenter ants near a wood structure deserves a closer look. Then place bait near where you’re seeing activity, not directly on the counter surface itself. On Patios and WalkwaysPavement ants nest in the soil beneath slabs and joints, which is why they show up along cracks. Mix two tablespoons of borax with 1/4 cup of honey or corn syrup and place small amounts on cardboard near ant activity.