Cockroach live in your kitchen, toilet, crack and crave and others secrete area. Also cockroach live water damaged area and darkness area. They move mainly in night and come for food. You may use cockroach control by cockroach gel and spray. You apply gel in your kitchen, toilet, under the sink and cracks and crave. If you apply cockroach spray it use in your toilet, basin, kitchen sink and lower part of the wall.