I've been using Ortho Home Defense to try and repel the infestation of ants we have in our home. FYI, our home is very clean and regularly cleaned by a professional maid service. This spray works OK for a day, maybe two. But, that's it. I sprayed all around the outside foundation, then inside around all the baseboards and entry points -- window sills, sliding door, etc. After heavy rains two days later, I woke up to THOUSANDS of ants all over our kitchen counters, floors and many still crawling unaffected by this spray. So, I resorted to the big guns - Raid Ant & Roach Killer. That did the trick even though it smells bad for a short while. Now, ALL the ants that made it inside are POOF!