The point I was raising was regarding the different species of cockroaches. In rural areas there are species that primarily live outside but can find their way

The point I was raising was regarding the different species of cockroaches. In rural areas there are species that primarily live outside but can find their way inside. German cockroaches tends to be more urban and indoors, so if you see one you can't hand wave it away as having just having hitched a ride into your house.