Cockroaches nontoxic, but there are countless bacteria in the body. They will cause great harm to your body.   Let me tell you specifically explain the following: (1) What are the main human cockroach harm? Cockroach on hazards behind domestica, sometimes more people hate. It is not only the spread of disease, but also people cause allergic reactions, such as allergic asthma, dermatitis. It crawling chaos everywhere in the food, chew clothing, paintings, everywhere there will be a trace of it. (2) cockroaches spread disease? Cockroach body with bacteria, cockroaches were contaminated food will make people get severe gastroenteritis, food poisoning or dysentery. It is an infectious disease bacteria and virus carriers, due to the full feeding, crawling, extensive harm, omnivorous, both in the garbage, toilets, bathroom activities, and feeding on the food, if the consumption of food contaminated by cockroach it is possible to infectious diseases, thereby endangering the cockroaches spread of the disease can not be ignored. (3) Cockroaches can spread diseases? Cockroaches have been shown to carry about 40-50 species of vertebrates pathogenic bacteria, such as Shigella, E. coli, Yersinia pestis, can cause food poisoning, spread of hepatitis, polio, pneumonia, tuberculosis and other pathogenic bacteria. It is also a variety of parasites intermediate host, can carry roundworm, duodenum Hookworms, beef tapeworm, burning worms, whipworm, and other worm eggs, also carries a variety of protozoa, of which there are four people animal or pathogenic, such as amoebic dysentery and other insects. (4) How to make the cockroach allergen? Because cockroaches feeding will produce smelly secretions undermine food flavor, weak constitution or sensitive person who had contact with contaminated food or cockroach cockroach droppings and secretions and dirty air, it will produce a variety of allergic reactions. (5) What are the cockroaches of the harm caused by the loss of homes? Cockroaches spread many diseases, more pervasive haunt appliances, equipment damage caused by a short circuit equipment, drilling will lead to ear all ear diseases. All cockroach poison poisonous or not, by the above analysis it will be clear