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In 1903, Frank August Hoppe mixed nine chemicals and created the most potent guncleaning solution the world had ever seen ? Hoppe's Nitro Powder Solvent No. 9. Since then, the Hoppe's brand has walked arm-in-arm with generations of hunters and shooters. Hoppe's have grown and advanced their technologies alongside the sports they love, and have remained the most trusted name in gun care.