German Cockroaches are notorious for spreading diseases by contaminating food and surfaces they come into contact with. They make asthma worse and can trigger allergic reactions in many.” ...

Keep food sealed tightly and stored away ... Think about whether German cockroaches may be entering through vents or pipes and consider sealing cracks around your home's foundation with caulk.

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.