We used to get ants real bad in our kitchen over the summers. What we did to get rid of them was to get some outdoor bug killer granules (my husband got it and spread it out so I am not sure what is is called) but you spread it out on the lawn and then use a hose to get it wet. I would concentrate it near the edges of the house (you can get this at Lowes or Home Depot maybe even Walmart where they keep all the outdoor bug control). I would also go with some of the ant traps. We used the ones that have the poison stuff in it that they bring back to their colony where they eat it and the ants die. And just make sure that everything is kept real clean and no food lying about anywhere. We haven't seen ants in our house for the last 2 years now.