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    Home»How-To»That Keurig You Never Clean Is Turning Your Coffee Into a Moldy Mess
    How-To

    That Keurig You Never Clean Is Turning Your Coffee Into a Moldy Mess

    techupdateadminBy techupdateadminSeptember 28, 2025No Comments5 Mins Read
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    All the Places Mold Is Hiding in Your Keurig, and How to Get Rid of It
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    You love how easy your Keurig is, right? Pop in a pod, press a button, and you’ve got coffee. But let’s talk about that gunk you’ve been pretending not to see building up inside. I’ve got some bad news for you: that’s probably mold.

    Home Tips

    Before you pour your next cup, maybe consider that you’re brewing it through a machine that’s seen better days. The fix is ridiculously easy, yet so many people skip it. A proper cleaning will not only save your Keurig from an early death but also ensure your expensive coffee pods don’t taste like, well, mold.

    The process is simple: descale the inside to get rid of mineral buildup, actually wash the removable parts, and wipe the whole thing down. A few minutes of maintenance is a small price to pay for a coffee maker that isn’t secretly a science experiment.


    Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.


    Clean it regularly — and properly — and your coffee will taste better, the Keurig machine will last longer and you won’t have to deal with as many mid-morning spills and disasters. Ready to give your coffee maker some much-needed love? Here’s how to deep clean a Keurig from top to bottom.

    If you’re looking for a new coffee maker, you can also check out the best Keurig deals available now. Plus, take a look at our picks for the best coffee makers, best cold-brew coffee makers and best coffee accessories.

    A hand wiping the handle of a Keurig with a cloth


    Enlarge Image

    A hand wiping the handle of a Keurig with a cloth

    Wipe down the outside of your Keurig brewer with a damp cloth.

    Brian Bennett/CNET

    1. Clean the outside of the Keurig

    Start by wiping down the brewer’s exterior. Keurig recommends you do this daily. First, make sure the coffee maker is powered off and unplugged. Next use a damp cloth to wipe away dust and other debris from the outside of the machine. 

    Pay close attention to the area on the front, right below the coffee dispenser. This section typically attracts plenty of splashes and drips.

    Gunk spread throughout a black tray


    Enlarge Image

    Gunk spread throughout a black tray

    If your Keurig brewer’s drip tray looks like this then it’s time to clean it.

    Brian Bennett/CNET

    2. Wash the drip tray

    Another coffee machine part that’s prone to grime is the drip tray. Liquid from spills often sits inside it unnoticed. Coffee drips can evaporate here too, leaving stains behind. A quick hand wash in the kitchen sink will clear up this mess in a jiffy. Warm water and dish soap does the trick nicely. Perform this cleaning task daily.

    Clear water in a clean tray

    After a quick hand wash in the sink, the drip tray looks great.

    Brian Bennett/CNET

    Save yourself the hassle and just buy a Keurig maintenance kit. This one comes with a 3-month supply of everything you need.

    Details

    3. Clean out the water tank

    Another daily cleaning task is to give the same hand wash treatment to the water tank. Be sure to remove the water filter first if your machine has one. Depending on your brewer, your tank may be safe to throw in the dishwasher.

    Pod holder covered in dark gunk


    Enlarge Image

    Pod holder covered in dark gunk

    The pod holder was the dirtiest area on my test K-cup brewer.

    Brian Bennett/CNET

    4. Check the pod holder

    The dirtiest section of my test Keurig K-Classic brewer was its pod holder. Grounds, dirt and dried coffee had formed a noticeable amount of crud here. To fix this, I removed the pod holder, and separated it into its two main parts. Then I gave them a water rinse and a good scrub with a damp cloth.

    You may also want to use a paper clip to clear any debris from inside the brewer exit needle. The exit needle sits inside the pod holder. Take care though, because that needle is sharp. Be advised that Keurig recommends you clean the pod holder every week.

    A Keurig filling a mug with brownish water

    Run a water-only brew cycle to flush out your Keurig coffee machine’s brewing system.

    Brian Bennett/CNET

    5. Flush out the whole system

    Keeping your Keurig machine’s brewing system clean is critical. Dirty hardware can lead to unwanted flavors carrying over from the last brew. Tasting pumpkin spice latte in your Sumatra single origin is not ideal. Bits of grounds or other debris could cause clogs, even a malfunction.

    To clear everything out, run a daily water-only brew cycle through the machine. Make sure there’s enough water in the reservoir and that the pod chamber is empty. You can run any cup size cycle you like, as long as the mug you’re brewing into is large enough to accept the liquid. 

    And if you’ve never descaled your brewer, or it’s been three months since you have, consider doing so. According to Keurig, you should perform the procedure quarterly. You can use either vinegar or the company’s special descaling product. Keep in mind that it is a lengthy process requiring at least 45 minutes (4 hours with vinegar).

    Still, descaling will remove any mineral deposits (often found in tap water) that may be clinging to your brewer’s internal components. This in turn ensures your coffee maker brews at its optimally designed temperature. 

    Once you’ve completed all these steps, wipe down the brewer again to remove any excess moisture. It should now be ready to brew in tip-top shape.

    For more household cleaning tips, check out how to clean a cast-iron skillet, how to clean your grill and how to clean a mattress. 

    Watch this: How to clean your Keurig with distilled vinegar

    01:31

    More must-read cleaning hacks

    Clean Coffee Keurig mess Moldy turning
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