Exploding flies...difficult to remove

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anyone found an easy way to remove this

Dish scrubbies work well for us; but agreed, very stubborn and annoying, especially if it’s in a high window.

6” Scraper

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They had explosive diarrhea? We have used a scraper, white pad, bronze pad, steel wool, they all work well. The worst, I think, are dusty ledges with a cemetery of flies.

no it’s a fungus.