Roaches have declined somewhat over the last few decades but are still a very important pest. Successful treatments require an extensive amount of knowledge and know-how. Roaches are extremely adoptable to many situations. They have evolved over 64 million years to be able to adapt. A successful treatment requires the use of several different products in conjunction with good sanitation practices.
Roaches become highly immune to certain products and treatments and rotation is key to successful ongoing programs. A product that works great right now might hardly work 6 months from now. For a good control one must be able to evaluate and change as needed.
There are several types of roaches in the United States; the most common ones are American, Oriental German, and Brown Band Roaches with the German roaches leading the pack by far. Control products use would contain a mixture of baits, insecticides, insect growth regulators and traps.