Common pests include ants, cockroaches, rodents, and spiders. Each of these pests can be identified by their appearance and behavior. Ants, for example, are usually small and red or black in color. They travel in large, organized groups and typically enter homes through cracks and crevices. Cockroaches are usually darker in color and can range in size from one-eighth of an inch to two inches. They’re typically found in warm, moist areas and reproduce rapidly. Rodents, such.As leading Exterminators in Oman ,they are doing following Pest control services :