Not just kill...repel

  I'm having major issues with fire ants in my yard. I've used Amdro and other products which work on the mound but then other mounds crop back up. I have three dogs and a vegetable garden, so controlling fire ants is very important to me. What is the best product to not only kill the mounds but keep new colonies from coming into my yard? My neighbor uses a professional company bait product, so we may getting the ants from her yard as well. Any help you can provide would be greatly appreciated. I'm sure my puppies will also be happy not to have ants in between their toes!