When you go to all the trouble and expense that you do to get great coffee, the thing you don't need is limescale in your coffeemaker throwing off the taste. If you're not familiar with it, go get a cup of coffee from Panera. Their coffee always smells like limescale. You should be doing this about once per month. It's simple. Just like brewing coffee, except you're cleaning the coffeemaker. Like when you used to pop that head cleaning cassette into your tape player. Keeps the taste crisp. And increases the longevity of your coffeemaker by aeons. Dezcal contains four descaler packets. Grindz is like Dezcal for your grinder. Pop some tabs in and grind them up. It cleans all the oils, odor, and residue out of the burrs, so you have a fresh start with your fresh coffee. If you're using an espresso machine, it's important to backflush it each day with Cafiza. This is what we use at the DoubleShot, and is the industry standard to keep your equipment running clean and smooth.