Published July 18, 2026 · Reviewed by the Unbiased Advice & Insights editorial team · How we research and score
Blend warm water with a drop of dish soap for 30 seconds, then rinse. For stuck residue, soak with soapy water or use a long brush. Remove odors with baking soda or lemon. Hand wash the blade base to protect the seal.
Why Cleaning Your Blender Matters
A dirty blender can harbor bacteria, develop unpleasant odors, and even dull its blades over time. Food residue left on the blades or under the gasket can harden, making future cleaning harder and affecting performance. Regular cleaning not only keeps your blender hygienic but also extends its life. Our editorial team compared specifications, buyer feedback and key decision factors to bring you this practical guide.
Blenders are used for everything from smoothies to hot soups, and each use leaves behind particles. Oils from nuts, fibers from greens, and starchy residues from fruits can cling to the jar and blade assembly. If not cleaned promptly, these residues can stain plastic jars and cause the rubber gasket to degrade. A clean blender also ensures that flavors don't transfer between uses, so your morning fruit smoothie doesn't taste like last night's salsa.
How to Clean a Blender: Step by Step
1. The Self-Cleaning Cycle (Quick Daily Clean)
Most blenders have a self-cleaning function, but if yours doesn't, you can simulate it. Fill the jar halfway with warm water and add a drop of dish soap. Blend on high for 30 seconds. The soap and water action will dislodge most residue. Rinse thoroughly with clean water. This method works well for smoothies, shakes, and light mixtures. Avoid using boiling water as it can damage plastic parts or cause thermal shock to glass jars.
2. Removing Stuck Residue
For dried-on or sticky residue, start by soaking. Fill the jar with warm soapy water and let it sit for 15-30 minutes. If residue remains, use a long-handled bottle brush or a soft sponge to scrub the sides and bottom. Never use abrasive scrubbers on plastic jars as they create scratches where bacteria can hide. For the blade assembly, be careful: the blades are sharp. Use a brush to clean under the blades without touching them directly. If your blender jar is dishwasher safe, you can place it on the top rack, but hand washing the blade base is recommended to preserve the gasket.
3. Dealing with Odors
Odors can linger even after washing. To neutralize them, blend a mixture of warm water, a tablespoon of baking soda, and a few drops of lemon juice. Let it sit for 5 minutes, then rinse. Alternatively, blend white vinegar and water (1:1 ratio) and let it sit for 10 minutes. For stubborn odors, leave the jar to air dry with the lid off in direct sunlight, as UV rays help kill odor-causing bacteria. Avoid using bleach or harsh chemicals as they can damage the plastic and leave residues.
4. Maintaining Blade Sharpness
Blades can dull over time due to hard ingredients (ice, frozen fruit, nuts) and improper cleaning. To keep blades sharp, always blend liquids first before adding frozen items. When cleaning, avoid soaking the blade assembly for long periods as moisture can get into the bearing. Dry the blade assembly immediately after washing. If your blender has removable blades, you can occasionally sharpen them with a sharpening stone, but most manufacturers recommend replacing the entire blade assembly when it becomes dull. Signs of dull blades include longer blending times, uneven textures, or leaking from the base.
5. Deep Cleaning the Gasket and Lid
The gasket (rubber seal) and lid often trap food particles. Remove the gasket if possible and wash it by hand with warm soapy water. Use a toothpick or small brush to clean the groove where the gasket sits. The lid should be washed similarly, paying attention to the pour spout and vent. Allow all parts to air dry completely before reassembling to prevent mold growth. If the gasket is cracked or warped, replace it to avoid leaks.
When to Replace Your Blender
Even with excellent care, blenders eventually wear out. Replace your blender if you notice: persistent leaks from the base (indicating a failed seal), blades that are visibly chipped or bent, a motor that smells like burning or struggles to blend, or cracks in the jar. Also replace if the jar becomes cloudy or scratched to the point where cleaning is ineffective. Most blenders have a lifespan of 3-5 years with regular use. High-end models may last longer, but parts like gaskets and blades can be replaced to extend life. Check the current price on Amazon for replacement parts or a new blender if needed.
Frequently Asked Questions
Can I put my blender in the dishwasher?
Many blender jars are dishwasher safe, but check your manual. The blade assembly often has a gasket that can degrade over time with dishwasher heat. Hand washing the blade base is usually recommended to preserve the seal. The lid and jar (if glass or BPA-free plastic) are typically top-rack safe.
How do I get rid of blender smells?
For lingering odors (like garlic or fish), blend a mixture of warm water, a few drops of dish soap, and a tablespoon of baking soda. Let it sit for 5 minutes, then rinse. Alternatively, blend lemon peels or white vinegar with water. Dry the jar thoroughly with the lid off to prevent mold.
How often should I deep clean my blender?
After every use, do a quick rinse or self-clean cycle. A deep clean (disassembling and scrubbing the gasket, threads, and blade underside) should be done weekly if used daily, or at least monthly. This prevents buildup that can dull blades and cause odors.
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See our full buying guides hub and our research and scoring methodology. We compared specifications and verified owner feedback; we did not physically test every product.