4 Answers

Some tips here >http://www.wikihow.com/Get-Rid-of-Ants

Here's a safe, easy, cheap solution

http://frugalliving.about.com/od/doityourself/tp/Get_Rid_of_Ants_Cheaply.htm

I've had success ridding areas of crickets & ants with diatomaceous earth.  It's safe, non-poisonous....try sprinkling some around where you see them.  It will cause them to self-destruct without hurting your animals, yourself or hurting the environment.  The only thing that's bad is that you need to put down this white powder & leave it for a while.  In my house, where I get invaded by all kinds of critters, I've found it works & then, I just sweep up the powder.  I'll send a good thought for you.   SkyM 

You can use talcum powder and sugar to attract them to it, and take it back to their nest.  The talc cuts their exoskeleton and they dry out and die.  Look for their ant trail, and put it so they must walk through it.