Homemade Remedy for Fire Ants?

Does anyone have a homemade remedy for fire ants? I know one can purchase expensive bait to put out. I bought Amdro I believe it was. The last small bag I purchased was over $30.00. I had to apply it many times as the ants just moved from my yard to my neighbor's and back. With both of us treating we did eventually get rid of them. I think they are brought back each spring by mowing crews. A few weeks after mowing starts we find ant hills and start fighting them.