Description After years of development and field testing, Ox-Yoke Originals® proudly unveils Happy Valley No. 7™—a powerful, eco-friendly bore cleaner specifically formulated to tackle the tough fouling left behind by today’s synthetic propellants like Blackhorn 209™, Triple Seven™, Pyrodex™, and more. Crafted with all-natural, non-toxic ingredients, it’s safe on barrels, tough on residue, and effective on both modern substitutes and traditional black powder. Whether at the range or in the field, Happy Valley No. 7 keeps your firearm clean, accurate, and ready for the next shot. OX005
