Ant Invasion! Help!? We've bombed our house several times and placed poisens everywhere but...

We've bombed our house several times and placed poisens everywhere but everytime it rains more ants come within and they seem to grow immune to the poisens that we use. Is within anything we can place outside to stop the invasions?
Answers:    well you entail to address the colony itself...it sounds like what you are treating is in recent times the foraging ants in which near will always be more to give somebody a lift the place of the ones you have kill. Not really a good answer for you because would call for to know what species of ants you have...within is no one product to exterminate all for the homeowner
Well... ants eventually supply to their gene pool with poison resistance. So what you would hold to do is somehow kill the unharmed population of ants at once and leave none alive to produce litter. That's a thoughy...