Housefly: An Everyday Monster 1994 on netflix

With the aid of spectacular macrophotography, this film demonstrates how the common housefly has followed man throughout the ages to become one of the most enduring nuisances of the natural world. An up-close-and-personal encounter with these “common monsters” highlights their ability to propagate, feed, and avoid extinction and extermination. The result is the most extreme form of reality television you may ever see.