There is something so gross and yet so funny and so beautiful (in an artistic way) in the Flies by Magnus Murh. I could not stop looking at them. I am pretty sure he does not kill the flies himself but rather finds them on the floor in the dust or in the gutter of windows. Honestly it is not too hard to find dead flies. I personally see nothing wrong with turn them into art. It like Bodyworks but with flies and more funny.