Pittsburgh Pothole Soap from Pittsburgh Worsh Co : “Pittsburgh Pothole” Activated Charcoal Soap – Thanks to winter weather ranging from freezing rain, sleet and snow (sometimes all within the same day!), our regions roads can be full of potholes by spring. This soap was created in the spirit of the spring Pothole Blitz, with Activated Charcoal, Tamanu Oil, Grapefruit, Tea Tree and Rosemary Essential Oils all which have potent antioxidant and antibacterial properties to help the skin.