I live in a second floor, but for some reason there are ants in my apartment. Last night a put the trap shown on the left with a piece of peanut in the center. It is a sticky trap, so the ants are supposed to get trapped when they try to get closer to the food. This morning I found the trap as shown on the right side of the picture. Those bitches built a bridge to get the food. No ants harmed. It looks like they are smarter than me. I'll have to try with a shotgun next time :-)