About 1/2-inch in length.
The German cockroach is the most prolific breeder among all cockroaches. Each egg capsule can contain up to 40 eggs and development from egg to adult can occur in as little as 45 days. Like all cockroaches, it is omnivorous and will eat virtually anything people will and many things we won’t.
In homes, this pest will first locate itself in bathrooms and the kitchen, as close as possible to food and moisture sources. It spends about 80 percent of its time resting in cracks and voids.
Control of German cockroaches takes persistence and experience. An infestation can be controlled using over-the-counter products, but homeowners often meet with frustration and call a professional.