Flies are also a major cause of disease suffering and economic hardship around. Flies have been a major nuisance to humans and animals for thousands of years. Many transmit disease causing organisms and are linked directly to typhoid, cholera, dysentery, diarrhea, pinworms, roundworms, whipworms, hookworms and tapeworms. Most flies have filthy habits that make them efficient disease transmitters. Disease causing organisms are picked up by flies from garbage, sewage, rotting debris, dead animal carcasses, animal excrement, etc and are directly transmitted to us by way of their mouthparts or through their vomit or feces to our food, our food preparation surfaces, our sanitary items and to almost anything that we contact.