Traditional claying should be reserved for people who like to make life challenging. If you are the type who prefers to make love standing up in a hammock, then stick with the old way. Technology has moved on and polymer rubber surfaces is where the smart money goes. There is no need to discard a mitt after 3 uses, they are good for 50+ uses so, as a consumable, they are way more cost effective than a clay bar. And remember, the minute you drop a piece of clay, it is game over. Stop all the book burning, clay mitt technology is the future of detailing.