How to Clean a Coffee Grinder with URNEX Grindz: Step-by-Step
By Onyx Coffee Lab | Published: 2026-09-13
Category: How-to Guides
Learn how to use URNEX Grindz grinder cleaning tablets to remove coffee oils and residue from your grinder. Follow our step-by-step guide for a cleaner, better-tasting brew.
Quick Answer
To clean your coffee grinder with URNEX Grindz, run a few grams of tablets through the grinder on a medium setting, discard the grounds, then grind a small amount of fresh coffee to clear any residue. This removes accumulated oils and old coffee particles, improving flavor and extending grinder life.

Coffee grinders accumulate stale oils and fine particles over time, which can make your coffee taste bitter or flat. Cleaning with URNEX Grindz tablets is a simple, effective way to keep your grinder fresh and your coffee at its best.
This guide walks you through the process step by step, including common mistakes to avoid and tips for getting the most out of your grinder cleaning routine.
Why Clean Your Coffee Grinder?
Coffee oils and particles build up inside your grinder, especially in the burrs and chute. This residue can go rancid, imparting off-flavors to your next batch. Regular cleaning with a dedicated coffee grinder cleaner like URNEX Grindz removes these deposits, ensuring your coffee tastes clean and true to its origin.
A clean grinder also operates more efficiently. Built-up residue can slow down grinding and cause inconsistent particle sizes, which affects extraction. By cleaning regularly, you maintain consistent grind quality and extend the life of your equipment.
- Clean your grinder every 1-2 weeks if you brew daily.
- For commercial use, clean more frequently depending on volume.
What You'll Need
To clean your coffee grinder, you'll need URNEX Grindz tablets and a small amount of fresh coffee beans. No tools or disassembly are required—the tablets are designed to be ground just like coffee.
Make sure your grinder is empty before starting. If there are beans in the hopper, remove them. Also, check that your grinder is unplugged or the power is off to avoid accidental starts.
Step-by-Step Cleaning Process
Follow these steps each time you clean your grinder with URNEX Grindz.
Step 1: Set your grinder to a medium-coarse setting. This prevents the tablets from clogging the burrs or grinding too fine, which could cause buildup.
Step 2: Pour the recommended amount of tablets (typically one packet or 2-3 tablespoons) into the hopper. Start the grinder and let it run until all tablets have passed through.
Step 3: Discard the ground tablets. Do not use them for brewing.
Step 4: Grind about 2 tablespoons of fresh coffee beans to clear out any remaining tablet residue. This also conditions the burrs with fresh oils, so your next brew tastes normal.
Step 5: Wipe down the hopper, lid, and exterior with a dry cloth. Do not use water or liquid cleaners, as moisture can damage the grinder and cause rust.
- Never run water through your grinder.
- Always use fresh coffee after cleaning to remove any lingering tablet residue.
Common Mistakes to Avoid
One common mistake is using a fine grind setting. This can cause the tablets to stick and clog the burrs. Always use a medium setting.
Another mistake is forgetting to discard the first batch of coffee after cleaning. That coffee is only for clearing residue—don't brew with it.
Skipping regular cleaning is also a mistake. Wait too long, and stubborn oils can be harder to remove, requiring more effort and possibly affecting flavor.
Step-by-Step Grinder Cleaning Checklist
- Prepare your grinder: Empty the hopper and ensure the grinder is off. Set grind size to medium-coarse. Check that no beans remain to avoid mixing with cleaning tablets.
- Run the URNEX Grindz tablets: Add the recommended amount of tablets to the hopper and grind completely. Listen for a smooth grind—any jamming means the setting may be too fine.
- Discard the ground tablets: Remove the ground tablets from the catch container and throw them away. Never brew with these grounds; they are not edible.
- Grind fresh coffee to clear residue: Grind a small amount of fresh beans to push out any remaining tablet particles. Test a brew after this step to ensure no tablet flavor remains.
- Wipe the exterior: Use a dry cloth to wipe the hopper, lid, and body of the grinder. Avoid water or liquid cleaners to protect the grinder's internals.
Products to Support Your Grinder Cleaning
- Everybody's Busy: Everybody's Busy is a thoughtfully crafted coffee blend from Onyx Coffee Lab, designed for those who appreciate a traditional cup whether brewing espresso or filter. This washed-process blend brings together beans from Colombia and Ethiopia, offering a familiar and balanced profile that fits easily into your daily routine. After cleaning your grinder with URNEX Grindz, use a small amount of fresh coffee like Everybody's Busy to clear residue. Its balanced, washed-process profile ensures that any remaining particles won't impart off-flavors.
- Fetco F00100000 15" x 5 1/2" Coffee Filter: Keep your cafe brewing station running smoothly with the Fetco F00100000 coffee filter, a practical warehouse essential sized at 15 inches by 5 1/2 inches. Designed for dependable use in commercial settings, this filter helps streamline your daily coffee service. When cleaning your grinder in a commercial setting, having reliable filters like this Fetco model ensures you can discard ground cleaning tablets efficiently and avoid cross-contamination with brewed coffee.

Cleaning your coffee grinder with URNEX Grindz is a quick and effective way to maintain coffee flavor and equipment longevity. Make it a regular part of your coffee routine, and you'll notice the difference in every cup.



