★★★★★
Neither chili powder nor borax powder stopped the trail of ants from coming inside. I thought sprinkling chili powder along their path was a winning remedy, but the ants simply went around the powder and marched on inside. I even saw a few ants walk right through the chili powder too. Wow!
What worked phenomenally well and almost immediately, was clove oil! I located the area just outside on the doorstep where ants were trailing in and added 5 drops of pure clove oil to the area. Then I added a drop of clove oil here and there along the kitchen countertop where a few remaining ants were lingering. Potent stuff. No sign of ants.
Am very glad not to have to use ant bait as I hate the thought of destroying an entire colony.