I had a roach problem in my apartment so bad I couldn’t sleep due to them crawling on me. It's been about 48 hour’s since I put down this cockroach killer powder and I have seen like 3 stragglers roaming around. But I am sleeping much better! I would like to recommend this http://store.parsonspestcontrol.com/ to who are all looking to control roaches in their homes or somewhere else. Thanks to Parsons Pest Control.