We've been fighting ants coming into our home for 20 years. We can keep them at bay but they're hard to kill. We've tried many different traps, the best have been Terro brand ant traps. We tried the liquid, dripped onto small shiny pieces of cardboard. You have to go get them and throw them away. The wife switched to the Terro ant traps, which has the poison inside. The ants crawl in and die, throw the trap away.
I know the desired action is for them to carry it back to their nest, but that's never worked. In the spring I use a powdered chemical around the base of the house, about 10" wide. I try to get it just before the spring rains so it goes deep into the ground. That has worked, we got to mid-July this year before seeing too many of them. They seem to be confined to the back door area.
When we travel to Florida in the winter I use Raid ant spray on the stabilizers, front crank foot, wheels, anywhere it touches the ground. I do this about every 2-4 days, depending on the level of ants around.
I do have one more solution. This past winter we had them coming in the oven, up to the kitchen counter. One of the back burners on the stove didn't shut off completely and we smelled "garlic" for 2 days before we discovered it. I'm thankful we didn't suffocate or explode, but no more ants.