I live in Missouri, and now that it’s warmer, we have black ants of various sizes (some huge, some pretty small lookin’) regularly invading our home. I’ve lit them on fire, sprayed them with bleach, squished them. They’re horrible, useless little thieves. I want to know the best way to kill them so they each suffer the most miserable deaths possible.

Any good poisons that keep them alive, convulsing..or anything?