One of the most prevalent insects on the planet, flies like to live indoors where the temperature is comfortable. They enter homes through windows and doors that are open. Because they disseminate diseases throughout the house, flies' diet of solid meals and liquids can pose a major health risk. Up to 2,000 different types of germs can be carried by house flies. Conjunctivitis may be brought on by these microorganisms. Numerous additional illnesses, such as salmonella, anthrax, and TB, can be spread by flies.