Shop on Amazon “This sticky cockroach trap features a unique liquid trapping substance that works as a highly attractive bait ...

Try cockroach bait gels such as Combat Max Roach Bait, available at Target, along cracks and crevices to lure them out from their sheltered positions. "Roaches also prefer to be in close proximity ...

so I think there's still plenty of room for us to keep working.

The German cockroach is one well-adapted bug. All our attempts to wipe it out is only making it stronger. It's evolved to avoid poison bait laced with glucose — something few living things do.