Megan mentioned Boric Acid as a sure-fire way. After looking it up, I found that most people that seemed to know anything about cockroaches said the same thing. Apparently, Borax is mostly boric acid, so I had Brandie pick up a huge box of the stuff. I had read that you should gently sprinkle it all over where you think they might walk. Too much and they would walk around it. This wasn't cutting the problem. They still kept showing up.
Finally I found what I was really looking for online: one expert suggested mixing 4 parts Borax, (or boric acid), 2 parts flour, and 1 part cocoa powder and (this is the best part) to apply it liberally! Excellent. So I mixed up the concoction in a bowl and I applied it as liberally as i could. Our kitchen is covered in the stuff!
However, a week later we were still seeing the stupid buggers! Luckily, I think we figured out that they are coming up the drain. We have been covering it lately and haven't seen one for a few days. Whether it's the boric acid, the drain plug, or both I don't know. All I know is that we are looking for a house!... With no dirty neighbors.
Keep in mind, this one's body was only about a 1/4 inch long. We've had them up to 3/4.
Even the kitchen sink.
Even the kitchen sink.