In order to keep the warranty in check for the Fellow Ode Grinder, you'll want to make sure you clean and maintain the machine properly. You'll need a Phillips head screwdriver, a stiff and soft brush, and a damp towel. Grinder cleaning tablets are optional but not needed. Image Source There's a helpful video guide on Fellow's website that details how to clean the stainless steel burrs, which should be cleaned at least every three months. If you follow these steps correctly, your Ode Grinder will last years.