You are killing workers. Its like smashing cars on the highway and expecting the ford factory to stopmanufacturing new cars.
You need to kill the nest.
I have one solution for you. 100% effective. Safe for pets and kids, amd virtually anything. But takes a week and can be thought of as cruel as to how they die.
It looks like table salt so dont let the word acid make you uneasy.
Ants generally have 2 phases of nutrient searching: protiens and sugars.
Mix some of this boric acid (salt like) in a tiny bit of water. Add some to aprotein source, i use expired canned cat food. The remaining add some sugar to. Place in dishes, i use bottle caps from larger plastic botles going to be recycled. Place in areas the ants travel.
They eat, take it back. Die a horrible death and get cannabalized inside their nest spreading the boric acid around. Kills almost all of them. It eventually get to the males and reproductive females and the colony is dead.
Nothing toxic needed. Virtually no time spent. And safe for your family. Plus its heap and you dont need to use a bunch of uneeded plastic crap like combat or raid type gimmicks.
Ps. Many an traps use boric acid. But not all.