I recently sprayed the perimeter, cracks, holes, chimmney, all pipes and lines in/out and gutters of house for carpenter ants using Lorsban®-4E insecticide (chlorpyrifos). 3 days after I sprayed I have close to 40 ants in the kitchen WOW!!! Did I trap them in the house do I have a nest? I watched their trail and found a hole behind a cabinet (I remove the cabinet) they go into but can't see or hear a nest anywhere. I put boric acid on the trail and have maybe seen 10 at the most in the following days. What do I need to do next??? Bait?, spray again?, treat the lawn and flower beds?, Do i have a nest in the house? Any help would be appreciated.