Mix equal parts white vinegar and water, add a few squirts of dish soap, and spray it directly on the ants and their trails. The vinegar disrupts their scent trails, so they get lost and confused. The soap suffocates them on contact.
I use this for a quick fix when I see a line of them on my steps. It doesn’t kill the colony, but it buys you time. And honestly, watching them bump into each other like drunk drivers is pretty funny. Just don’t spray it on plants—vinegar can burn leaves. Yes, I learned that one the hard way too.
24+ Smart & Easy Ways to Get Rid of Ants Outside