German CockroachSmall (1/2 inch), light brown with two dark parallel stripes on their head. These are the "indoor" roaches found in kitchens and bathrooms.
American CockroachLarge (1.5–2 inches) and reddish-brown. They can fly and are often found in basements or commercial sewers.
Oriental CockroachOften called "Water Bugs." They are shiny black or very dark brown and prefer damp, cool areas like crawlspaces and drains.
Rapid BreedingA single female German cockroach and her offspring can produce 30,000 roaches in a year.
Hiding in Plain SightRoaches prefer "thigmotactic" environments—meaning they like the feeling of something touching their back. This is why they squeeze into the tightest gaps behind appliances and cabinets.
Nocturnal LifeIf you see cockroaches during the day, it usually indicates a very large population, as the "prime" hiding spots are already full.
Why do I have roaches? My house is clean!Roaches only need three things: food, water, and heat. Even a clean home has moisture in sink drains and warmth behind a refrigerator.
Do they really survive a nuclear blast?They are hardy, but not invincible. However, they can survive for a week without their head and a month without food.
