How to clean a blender
Updated June 2026Independently researchedNo paid placement.
Run a self-cleaning cycle with hot water and a drop of dish soap, then disassemble the jar to hand-wash the gasket, lid, and blade assembly. Avoid scrubbing the blades with abrasives, rinse them gently to preserve the edge. Never submerge the motor base; wipe it with a damp cloth.
Why cleaning your blender matters for blade sharpness
A clean blender isn’t just about hygiene, it also protects the blades. Food residue, especially fibrous or sticky matter, can build up near the blade edge and force the motor to work harder. Over time, that extra friction can dull the cutting surfaces faster than normal use. Dried-on bits also make it harder to get a proper seal between the jar and the blade base, which can lead to leaks. A few minutes of thorough cleaning after each use keeps the blades sharp and the gasket flexible, so your blender performs like new for years.
The quick self-clean cycle: does it actually work?
Most blenders with a “self-clean” setting (common on models from Vitamix, Blendtec, and many mid-range brands) do a solid job of removing everyday residue. Fill the jar halfway with hot tap water, add a tiny squirt of dish soap, and run it on high for 30 to 60 seconds. The vortex scours the sides and blades without you touching them. That said, the cycle only cleans the interior surfaces you can see. It won’t reach the gasket, the underside of the blade assembly, or the tiny crevices where the blade meets the motor coupling. Use self-clean as a first pass, but always follow up with a quick manual check.
How to deep-clean the gasket and blade assembly
At least once a week (or every few heavy uses), disassemble the blender jar. Unscrew the blade base (most have a gasket ring underneath), remove the rubber gasket, and separate the lid gasket if there is one. Wash each part in warm, soapy water with a soft sponge. For stuck-on residue, soak the gasket and blade base in hot water with a little baking soda for 15 minutes before scrubbing. Pay special attention to the underside of the blade where the nut or coupling sits. Food particles love to hide there. Rinse thoroughly and let all parts air-dry completely before reassembling. Never put the gasket in the dishwasher, the high heat and strong detergent can warp the rubber, causing leaks later.
Dishwasher do's and don'ts for blender parts
Many blender jars are labeled dishwasher-safe, but that doesn’t mean every piece should go in. Glass jars and some Tritan plastic jars handle the top rack fine. But the blade assembly, gasket, and lid’s rubber seal are best washed by hand. Dishwasher cycles can degrade the gasket material and may knock the blade assembly out of alignment over repeated washes. If you do put the jar in the dishwasher, place it upside down on the top rack, away from the heating element. Remove the blade assembly first. Never put the motor base in the dishwasher or submerge it in water, wipe it with a damp cloth and dry immediately.
How to keep blender blades sharp during cleaning
Sharp blades are thin and can be damaged by aggressive scrubbing or abrasive pads. Avoid using steel wool, scouring pads, or harsh powders on the blade edges. Instead, rinse the blades under running water and use a soft bottle brush or sponge to clean around them. A gentle wipe from the center outward is safer than a back-and-forth motion perpendicular to the edge. If you notice a blade that seems dull after months of use, it’s usually due to friction from thick blends (like nut butters or frozen fruit) combined with leftover residue, not from cleaning. Soaking the blade assembly in warm vinegar water for 15 minutes can dissolve mineral deposits and restore some cutting efficiency, no abrasives needed.
What to avoid: common cleaning mistakes that shorten blender life
One big mistake is leaving the blender jar on the base filled with soapy water to soak. The liquid can seep into the motor housing through the coupling, damaging the electronics. Always remove the jar before soaking. Another is running the self-clean cycle too often without rinsing afterward, soap residue can accumulate and affect taste. Also, avoid putting very hot liquids (right off the stove) into a cold blender jar, as rapid temperature changes can crack glass jars or warp plastic. And never use bleach or chlorine-based cleaners on the gasket, they’ll break down the rubber. Stick to mild dish soap, white vinegar, or baking soda for stubborn smells.
Frequently asked questions
Can I put my blender jar in the dishwasher every time?
You can, but it’s better to run the jar through the dishwasher only occasionally. Frequent dishwasher cycles can cloud plastic and weaken the gasket over time. Hand-washing the jar and always hand-washing the blade assembly and gasket will keep your blender in optimal condition longer.
How do I remove stuck-on residue from the blender jar?
Fill the jar with hot water and a tablespoon of baking soda, then let it soak for 15 to 30 minutes. For extra stubborn bits, add a splash of white vinegar (it will fizz) before soaking. Scrub gently with a non-abrasive sponge or a bottle brush.
Do I need to oil the blender blades?
No. Blender blades are intended to run dry (with food, of course). Applying oil would only attract dust and could ruin the integrity of your blends. If the blade assembly becomes difficult to unscrew, check the threads for dried residue, not a need for lubrication.
How do I get rid of lingering smells in my blender?
After washing, blend a mixture of hot water, a tablespoon of baking soda, and a slice of lemon or lime. Run on low for 30 seconds, then rinse. Alternatively, a paste of baking soda and water left on the jar for 10 minutes before rinsing works well for strong odors like garlic or fish.
How do I clean the blender base without damaging it?
Unplug the blender and wipe the base with a slightly damp cloth (not wet) and a tiny amount of mild detergent. Dry immediately with a soft towel. Never pour water or spray cleaner directly on the base. For tough spills, use a cloth wrung nearly dry; moisture getting into the vents can ruin the motor.
How often should I replace the blender gasket?
Most manufacturers recommend replacing the gasket every 6 to 12 months, depending on usage. Check it monthly: if it feels hard, cracked, or doesn’t snap back when pinched, replace it. A worn gasket is the most common cause of leaks, and it also lets food particles get trapped underneath, making cleaning harder.