John Dwight's Hammer

Origin
John Dwight was partner with Austin Church, with whom he started the modern day company Arm & Hammer. Named for the logo of a muscular arm holding a large hammer, their products consist mostly of cleaning supplies and hygienics, most notably baking soda.

Effects
Striking it cleans and sterilizes anything in the immediate area. Do not strike it twice in the same area. This will cause that spot to not only become squeaky clean, but also remove several layers of the surface in the process.