I live in a large apartment building. I had seen cockroaches outside last summer, but it wasn't until February that I started seeing them inside, in the bathroom, in the kitchen sink, really pretty gross. ACE came very quickly after I called and laid poison, which took care of them for a while. However, it's been a month now and it seems like they're back, so it might be a larger problem than they anticipated. Overall, good, quick service.