The answer to 'types of cockroach' is that there are several common species of cockroaches that can infest homes. The most well-known are the German cockroach, American cockroach, Oriental cockroach, and Brown-banded cockroach. These cockroaches differ in size, color, and behavior, but all can be difficult to control and pose health risks to humans.
German cockroaches are small, light brown insects about 1/2 to 5/8 inch long. They are the most common indoor cockroach and can reproduce quickly, leading to large infestations. American cockroaches are the largest house-infesting species, reaching up to 2 inches long. They are reddish-brown and prefer warm, moist environments. Oriental cockroaches are dark brown to black and prefer cooler, damp areas like basements. Brown-banded cockroaches are slightly smaller than German cockroaches and can be found in a variety of locations throughout the home.