German cockroach (Blattella germanica, the German cockroach JI) is a common indoor pests. Light brown, chest area with two black stripes, three days after mating females spawning pods and carry about 20 days. Small in size, about 12 mm (less than 0.5 inches), it is often loaded grocery bags or boxes into the house. Have been brought to the ship around the world. Can produce three generations a year or even more generations. German cockroach very large quantity around New York City Croton (Croton) aqueduct pipes, so vulgar 名克罗 Dayton insects. Circadian rhythm nocturnal cockroach, showed significant circadian activity rhythms. It is observed from 19:00 German cockroach activity will begin 21-22 point activity, appear small peak cockroach drugs at 2:00 the next morning, 5:00 disappear. Black cockroach activity since the beginning of 19:00, 20:00 that is now peak to 23:00 and 2:00 the next morning peak will appear two small cockroach cream, morning 4:00 activities terminated. It is observed that in 12 hours day and night cycle in the activities of the Central American cockroach, can be divided into six periods. Of 1: Before the start of darkness, the activity level began to rise. Section 2: After Dark beginning, activity increased significantly. Section 3: peak activity period, which lasted 2-3 hours. Section 4: a sudden drop in the level of activity. Section 5: In the dark half of the cockroach pharmacy activities remain low. Cockroaches on 6: In five hours after dawn, or are still low activity, or completely at rest. Furthermore, although the German cockroach is largely nocturnal insects, but at night the lights cockroaches smoked drugs, sometimes does not make them run away immediately, even in bright light or day, you can see them on the desktop, wall, etc. crawl. Anti-cockroach drugs | Fuzhou Shengwei (certified) | cockroach drugs provided by the Environmental Technology Co., Ltd. Fuzhou Shengwei. Environmental Technology Co., Ltd. Fuzhou Shengwei (www.fzsw.com.cn) is Fuzhou, insect terminator leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Shengwei leadership in Fuzhou with the staff warmly welcome all inquiries negotiations to create Fuzhou Shengwei a better future.