If you have German cockroaches in your home, however, you might have an infestation requiring other eradication measures.

COCKROACH CONTROL: Advion Cockroach gel bait from Syngenta is a high-performing bait product targeting many pest species of cockroaches including German, American and gel bait-averse cockroaches.

However, according to the pest control company Orkin Canada, while bites are “rare,” German cockroaches can and do bite, largely when humans are asleep. “They may feed off of food particles ...

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.

Crack-and-crevice treatments were simulated in the presence and absence of German cockroach [Blattella germanica (L.)] feces to evaluate its effect on insecticide efficacy toward the German cockroach.