I grew up in Florida, where you might come home and find a cockroach walking out of the bathroom with a towel around its head saying, "We need more toilet paper."
Okay, I kid, but it was almost that bad. We say there are no houses in Florida without cockroaches, just houses where they (mostly) aren't visible.
Now I live in Singapore, famous for being a clean city, and there are rats and cockroaches galore. Tropics, man....