Ok. Probably the nicest thing to do, but if they start running trails along my home, I kill them. I don't want them coming into my home, and yes, I've caulked the hell of all visible cracks. Haven't used regular pesticides in decades. I used to just mix dish soap and water in a spray bottle and that did the job just fine. But as time went by I got lazy and just grabbed whatever was under the sink. I've had a cleaning lady for years and the stock of cleaning supplies under my sink has accumulated over the years: clorox surface cleaner, floor cleaner, "green" general sprays, toilet cleaner, carpet sprays. They all work just fine I find. Don't even know why people by pesticides.