The only thing I've ever found that works is powdered sugar mixed with boric acid (not boraxo) about 2/3 sugar to 1/3 boric acid.
It's poison, so place where pets and kids can't get it.
The ants carry it away, so it isn't there very long. I place it on the ant hill and put an excercise pen around it so my dogs don't get it. The dogs aren't attracted to eat it, but can get it on their feet and lick their feet.
For the kitchen, you can place it under the sink and under the stove and fridge so kids can't get into it.
It takes a couple of weeks to kill all the ants, but it will wipe them out.
Spectracide Bug Stop is a long term control, so if you get desperate, spray it where the ants are getting in and it stops them long term. They claim up to 9 months control. The stuff works on ants and flour weevils, might work on spiders.
It does not stain paint, or any flooring that I've put it on so far. Just spray it where your kids aren't going to be touching.