The odometer is a tool that aids in the measurement of one's grogan. It measures the smell of a grogan, using a system based on the smelliest races of people.

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

The odometer is applied to a grogan or brogan. It measures the strength of the turd by using a nationality ranking system.