I put this outside where the ants were crawling across my doorstep and hours later, they were gone. I loved being able to tell my husband that I had a solution ready to go when he noticed the ants. He put it by the door and the line stopped, putting a quick end to a trail of ants that we had been seeing for months. Would definitely recommend to quickly end your ant problems. Usually we would call the pest control people. This did the trick. The next thing I want to try is against the bees. I will update once I try that.