Flies carry germs that are responsible for causing diseases like dysentery, food poisoning, Conjunctivitis and Typhoid. They use rotten vegetables and human excreta as food, that's why it's important to keep your home free from flies.   Conjunctivitis Flies can contaminate your eyes with pathogenic bacteria and cause conjunctivitis. Entrance of bacterial or viral microorganisms into the eye causes conjunctivitis, which is carried by flies. Various combinations of the following symptoms may be present: itching, redness, sensitivity to light, irritability in the eyes, swelling of eyelids and discharge from the eyes. It is a highly communicable disease, so one should avoid sharing clothes and towels and wash your hands thoroughly after touching your eyes.. Many kinds of conjunctivitis are hard to prevent. In summers, it is important to keep your homes and localities free from flies. Typhoid Flies spread typhoid fever. Typhoid fever is an infectious disease caused by bacterium Salmonella typhi, be life threatening if not medically treated. Symptoms of typhoid include high fever, headache, coughing, vomiting, and inability to think clearly. Classic typhoid fever is a serious disease. It can be life threatening if left untreated. It is communicable which makes it more dangerous. Constipation and skin rashes are early signs of typhoid.     A person with typhoid should seek medical help. Precautionary measures should be taken to stop its spread. Vaccination should be taken to prevent spread. The routes of infection depend on hygiene conditions. Proper hygiene should be maintained to prevent the spread of infection.   top Proper hygiene is the most important way of preventing spread of all kinds of diseases. Also, there are products available to kill flies. Some of them are:     top