6 Reasons Why Your Washer Smells and How to Fix Them

If your washer smells musty or sour, you’re likely dealing with mold, mildew, or soap scum buildup. The best approach is choosing a cleaning product that targets these issues effectively. The Affresh Washing Machine Cleaner makes a strong case for overall performance and ease of use, while the OxiClean Washing Machine Cleaner offers odor-blasting power at a budget-friendly price. However, some products require frequent use or specific types of washers, creating a balance between effectiveness and convenience. Continue reading for a detailed breakdown of each cleaner’s strengths and tradeoffs.

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Key Takeaways

• Deep cleaning tablets like Affresh and OxiClean stand out for their ability to remove mold and soap scum that cause odors.
• Product versatility varies; some cleaners work well on all washer types, while others are optimized for front loaders or top loaders.
• Frequency of use impacts value—more potent options may need to be used less often, but they often come at a higher price.
• Enzymatic formulas like ACTIVE are best for pet owners dealing with organic odors, but may be less effective on mold buildup.
• Cost per use is a key factor—bulk packs often provide better long-term value without sacrificing performance.

Our Top Why Does My Washer Smell Picks

Washing Machine Cleaner Descaler 24 Pack – Deep Cleaning Tablets for HE Front Loader & Top Load Washers		Best Overall for Eco-Friendly, Long-Term Maintenance	Quantity: 24 tablets	Compatibility: All washers including HE, front loader, top loader	Eco-Friendly: Yes	VIEW ON AMAZON	See Our Full Breakdown
Washing Machine Cleaner Tablets, 24 Pack – Deep Cleaning Descaler for All Washer Types		Best for Effective Deep Cleaning and Deodorizing	Quantity: 24 tablets	Supply Duration: 12 months	Compatibility: HE, front-load, top-load washers	VIEW ON AMAZON	See Our Full Breakdown
Affresh Washing Machine Cleaner, 6 Time-Release Tablets, 6-Month Supply		Best for Monthly Deep Cleaning and Odor Control	Quantity: 6 tablets	Duration: 6 months supply	Application: Deep cleaning for washing machines	VIEW ON AMAZON	See Our Full Breakdown
Tide Washing Machine Cleaner Powder – 5 Month Supply		Best for Fast-Acting, Deep Residue Removal	Type: Powder	Quantity: 5 months supply	Suitable for: Front and top loader washers	VIEW ON AMAZON	See Our Full Breakdown
ACTIVE Washing Machine Cleaner for Pet Owners – Enzymatic Deep Clean Descaler for Top Load, Front Loader, HE Washer – 24 Tablets, 1 Year Supply		Best for Pet Owners Facing Pet Hair and Odor Challenges	Quantity: 24 tablets	Suitable for: Top Load, Front Loader, HE Washer	Safe for: Septic systems	VIEW ON AMAZON	See Our Full Breakdown
OxiClean Washing Machine Cleaner with Odor Blasters, 4 Count		Best for Quick Odor Elimination in All Washer Types	Quantity: 4 count	Suitable for: All washing machines	Septic Safe: Yes	VIEW ON AMAZON	See Our Full Breakdown

More Details on Our Top Picks

1. Washing Machine Cleaner Descaler 24 Pack – Deep Cleaning Tablets for HE Front Loader & Top Load Washers

   

   Best Overall for Eco-Friendly, Long-Term Maintenance

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   This pack stands out for its eco-friendly and septic-safe formulation, making it a reliable choice for those concerned about sustainability and safety. Its ease of use and 12-month supply make regular cleaning straightforward, especially compared to the Affresh tablets, which require monthly routines. However, it may need multiple applications for heavily soiled machines, and it’s not suitable for dryers. This product makes the most sense for buyers seeking a hassle-free, environmentally conscious solution that supports ongoing washer freshness without frequent repurchases.

   Pros:

   • Eco-friendly and septic-safe formulation
   • Includes a 12-month supply for ongoing maintenance
   • Easy to use with active cleaning power

   Cons:

   • Not suitable for dryers
   • May require multiple applications for heavily soiled machines

   Best for: Eco-conscious homeowners who prefer a long-term, maintenance-focused approach to preventing washer odors

   Not ideal for: Users with heavily soiled machines needing deep, immediate cleaning, or those seeking quick-fix solutions

   • Quantity:24 tablets
   • Compatibility:All washers including HE, front loader, top loader
   • Eco-Friendly:Yes
   • Septic Safe:Yes
   • Duration:12 months supply
   Our verdict

   “This pick is ideal for environmentally conscious users who want a simple, long-term solution to keep their washer smelling fresh.”

   → See it on Amazon →

2. Washing Machine Cleaner Tablets, 24 Pack – Deep Cleaning Descaler for All Washer Types

   

   Best for Effective Deep Cleaning and Deodorizing

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   This product makes sense for those who want a straightforward, no-mess maintenance routine, similar to Affresh but offers foaming action that may better tackle grime and soap scum. It’s compatible with all washers and provides a full year of cleaning, though it requires running a cycle, which might be inconvenient for busy households. Unlike the Tide powder, which acts faster, these tablets focus on ease of use and compatibility, but are limited to maintenance rather than heavy-duty cleaning. They suit users seeking a simple, effective way to keep odors at bay without extra effort or special tools.

   Pros:

   • Effective deep cleaning and deodorizing
   • No measuring or mess—easy to use
   • Compatible with all washer types and major brands

   Cons:

   • Requires running a cycle for cleaning
   • Limited to maintenance, not for heavy buildup

   Best for: Homeowners who prefer simple, maintenance-oriented cleaning with minimal effort

   Not ideal for: People with heavily soiled machines needing intensive cleaning, or those who want faster results

   • Quantity:24 tablets
   • Supply Duration:12 months
   • Compatibility:HE, front-load, top-load washers
   • Safe for septic systems:Yes
   Our verdict

   “This product suits buyers who want an easy, reliable way to maintain a fresh washer throughout the year.”

   → See it on Amazon →

3. Affresh Washing Machine Cleaner, 6 Time-Release Tablets, 6-Month Supply

   

   Best for Monthly Deep Cleaning and Odor Control

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   This pick makes the most sense for those who want a trusted, professional-grade solution that provides consistent, monthly maintenance. Compared with the other tablets, Affresh’s time-release design ensures your washer stays fresh without frequent remembering or manual dosing. Its smaller quantity means more frequent purchases, which might be inconvenient for some, and it’s limited strictly to washing machine cleaning. This product is ideal for users who prefer a routine, set-it-and-forget-it approach to odor prevention over the long term.

   Pros:

   • Effective at removing odors, bacteria, and grime
   • Easy to use—one tablet per month
   • Trusted brand recommended by appliance experts

   Cons:

   • Requires a consistent monthly routine
   • Limited quantity for those wanting longer intervals between use

   Best for: Consumers seeking a dependable, monthly maintenance routine to combat odors and grime

   Not ideal for: People who prefer larger packs or less frequent use, or who need immediate heavy-duty cleaning

   • Quantity:6 tablets
   • Duration:6 months supply
   • Application:Deep cleaning for washing machines
   • Compatibility:All makes and models, including HE washers
   • Certifications:EPA Safer Choice
   Our verdict

   “This is best for users committed to regular, monthly upkeep to maintain washer freshness.”

   → See it on Amazon →

4. Tide Washing Machine Cleaner Powder – 5 Month Supply

   

   Best for Fast-Acting, Deep Residue Removal

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   This powder formula makes sense for users who want faster results and a more potent cleaning action than tablets. Its fast-acting Oxi and TAED components target residues and odors quickly, making it suitable for those with persistent smells or grime. Compared with Affresh’s slower release, Tide’s powder can deliver cleaner results in less time, though handling powders can be messier and less convenient than pre-measured tablets. This product is suited for those who need rapid, deep cleaning and prefer powders over tablets for their versatile application.

   Pros:

   • Effective at removing residues and odors quickly
   • Works faster than tablets with active ingredients
   • Long-lasting 5-month supply

   Cons:

   • Packaging may vary, leading to inconsistency
   • Powder form can be messier and less convenient

   Best for: Homeowners battling stubborn odors or residues who prefer quick, deep cleaning

   Not ideal for: Users who dislike powders or want a simple, less messy routine, or those with lighter cleaning needs

   • Type:Powder
   • Quantity:5 months supply
   • Suitable for:Front and top loader washers
   • Features:Odor elimination, deep cleaning, septic safe, fast-acting
   Our verdict

   “This product targets users who need fast, powerful cleaning to eliminate persistent washer smells.”

   → See it on Amazon →

5. ACTIVE Washing Machine Cleaner for Pet Owners – Enzymatic Deep Clean Descaler for Top Load, Front Loader, HE Washer – 24 Tablets, 1 Year Supply

   

   Best for Pet Owners Facing Pet Hair and Odor Challenges

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   This enzymatic cleaner makes sense specifically for pet owners struggling with pet hair, odors, and grime buildup. Its targeted enzymes break down organic residues that cause lingering smells, outperforming generic cleaners in these scenarios. Compared to Affresh, which focuses more on bacteria and grime, ACTIVE’s formula is tailored for pet-related messes. The 24-tablet pack offers a full year of monthly use but may be more than some households need. It’s a smart choice for pet owners who want an easy, specialized solution to keep their washers fresh and odor-free.

   Pros:

   • Effective at removing pet hair, odors, and grime
   • Safe for all washer types including septic systems
   • Easy to use with simple tablet application

   Cons:

   • Requires regular monthly use for best results
   • More expensive per use compared to basic options

   Best for: Pet owners who need a dedicated solution for pet hair, odors, and grime buildup

   Not ideal for: Non-pet households or those seeking a general-purpose cleaner without enzyme technology

   • Quantity:24 tablets
   • Suitable for:Top Load, Front Loader, HE Washer
   • Safe for:Septic systems
   • Application:Monthly use
   Our verdict

   “Ideal for pet owners wanting a targeted, enzymatic solution to keep their washers odor-free and pet hair-free.”

   → See it on Amazon →

6. OxiClean Washing Machine Cleaner with Odor Blasters, 4 Count

   

   Best for Quick Odor Elimination in All Washer Types

   View on Amazon

   This product stands out for its ease of use and effectiveness at tackling lingering odors and residue buildup, making it a strong choice for those whose washers develop persistent smells. Unlike the deep-cleaning tablets like the Affresh or Tide powders, this pack is designed for quick, targeted freshening without requiring long treatment cycles. It’s especially suited for immediate odor issues rather than ongoing deep cleaning. The fact that it’s safe for septic systems adds to its appeal for households with septic tanks, ensuring no harm to plumbing. However, it’s not intended for use with laundry or clothing, so it won’t address odor trapped in fabrics or detergents. Also, it requires running a hot water cycle, which could be inconvenient if your washer’s hot water isn’t readily available or if you prefer low-energy solutions. For fast odor removal that’s safe for all washer types, this product makes a compelling choice, but it doesn’t replace thorough cleaning routines.

   Pros:

   • Effective at removing odors and residues quickly
   • Simple to use—just pour and run a cycle
   • Safe for all washer types and septic systems

   Cons:

   • Not designed for use directly with laundry or clothing
   • Requires running a hot water cycle, which may be inconvenient

   Best for: Homeowners seeking a quick, safe solution to eliminate washer odors without deep cleaning or disassembly

   Not ideal for: People with heavily soiled machines needing deep cleaning, or those wanting an all-in-one solution for laundry odors and residue

   • Quantity:4 count
   • Suitable for:All washing machines
   • Septic Safe:Yes
   Our verdict

   “This product suits those who need a fast, safe odor-fighting boost for their washer without the need for deep cleaning routines.”

   → See it on Amazon →

How We Picked

These products were selected based on their ability to combat common causes of washer odors, such as mold, mildew, and soap scum. We prioritized effectiveness, ease of use, and versatility across different washer types. Cost and value were also considered, especially for long-term use, along with user reviews and brand reputation. This ranking reflects a balance of these factors, favoring products that deliver consistent, noticeable odor removal with minimal hassle.

Factors to Consider When Choosing Why Does My Washer Smell

When choosing a washer cleaner to eliminate odors, consider several key factors beyond basic cleaning power. The type of cleaner—tablet, powder, or liquid—affects ease of use and dosage accuracy. Compatibility with your washer type (front or top load) ensures the product works effectively without causing damage. Budget considerations play a role, especially if multiple treatments are needed regularly. Additionally, look for formulas that target mold, mildew, and soap scum specifically, as these are common odor sources. Finally, think about whether you prefer enzymatic cleaners for organic smells or descalers for mineral buildup, and weigh the frequency of use against long-term value.

Type of Cleaner

The choice between tablets, powders, and liquids impacts how easy and convenient it is to use the product. Tablets like Affresh are pre-measured, reducing the chance of overuse or waste, and are generally simple to drop into the drum. Powders, such as Tide, often offer more control over dosage but require measuring, which can be less convenient. Enzymatic cleaners are typically in tablet or liquid form and excel at breaking down organic material, while descalers focus more on mineral buildup. Consider which form fits your routine and comfort level.

Compatibility with Washer Type

Not all cleaners are suitable for every washer type. Some products are formulated specifically for front loaders, which tend to develop mold due to their sealed design, while others work better on top loaders. Using a cleaner not designed for your washer can lead to subpar results or even damage. Always check the label to confirm compatibility, especially if you own a high-efficiency (HE) washer, which requires gentle, HE-safe formulas. Matching the cleaner to your machine ensures you get the best odor removal without risking harm.

Frequency of Use

How often you need to treat your washer depends on usage and odor severity. Some cleaners, like Affresh, are designed for monthly use, making them suitable for regular maintenance. Others, such as enzymatic tablets, may be used less frequently, but might require more frequent treatments if odors persist. Overuse of aggressive cleaners can damage seals or gaskets over time, so balancing effectiveness with manufacturer recommendations is key. Long-term cost and convenience should influence your choice.

Targeted Odor Sources

Different products excel at addressing specific causes of odors. Enzymatic cleaners are excellent for organic smells from pet hair or body oils, while descalers target mineral deposits that cause mustiness. If your odor problem stems mainly from mold or soap scum, look for products with ingredients proven to break down these substances. Understanding the root cause of your washer’s smell helps select the most effective cleaner, avoiding unnecessary expense on products that don’t address your particular issue.

Cost and Value

Long-term savings hinge on choosing a product that balances price with performance. Bulk packs or multi-treatment bottles often offer better per-use value, but may require a bigger upfront investment. Cheaper products might need to be used more frequently or may not be as effective, leading to recurring odors and extra purchases. Consider how often you’ll need to treat your washer and whether a slightly higher-priced, more potent cleaner saves you money over time. Also, check for guarantees or user reviews that confirm long-term odor control.

Frequently Asked Questions

How often should I clean my washing machine to prevent odors?

Most experts recommend running a cleaning cycle once a month to keep your washer smelling fresh. If you notice persistent odors, increase the frequency temporarily or consider using a more potent cleaner. Regular maintenance prevents mold, soap scum, and mineral buildup, which are the main culprits of bad smells. Consistent cleaning also prolongs the life of your appliance and keeps clothes smelling clean.

Can I use regular household bleach instead of specialized cleaning tablets?

While bleach can kill mold and bacteria, it may not be as effective at removing soap scum and mineral deposits that cause odors. Overuse of bleach can also damage rubber seals and gaskets over time. Specialized cleaners are formulated to target these specific issues more safely and effectively, often with less risk of damage or residue buildup. For best results, consider using a dedicated washer cleaner as part of your maintenance routine.

Are enzymatic cleaners safe for all washer types?

Most enzymatic cleaners are safe for both front and top load washers, but it’s important to verify the label for compatibility. These cleaners are gentle enough for high-efficiency (HE) machines, which require low-sudsing, HE-compatible formulas. Using a cleaner not suited for your washer type can lead to poor results or potential damage. Always follow the manufacturer’s instructions to avoid issues and ensure effective odor removal.

Will using these cleaners harm my clothes or laundry detergent?

No, reputable washer cleaners are designed to be used safely without affecting your laundry detergent or clothes. They work by removing residues and build-up inside the washer, not by altering your laundry routine. However, overusing or applying excessive amounts of any cleaning product could lead to residual buildup or irritation. Follow the recommended dosage and frequency for best results without risking harm to your laundry.

What should I do if odors persist even after cleaning?

Persistent odors may indicate deeper issues like mold in hoses or seals, or mineral deposits that require more intensive treatment. Double-check for mold in door seals, filters, or drain areas. Consider using a more concentrated or specialized product, and ensure you run a thorough cleaning cycle. Improving ventilation, leaving the door open after washes, and regular maintenance can also help prevent odor recurrence. If problems persist, consulting a professional may be necessary.

Conclusion

This roundup offers options tailored to different needs: Affresh stands out as the best overall choice for reliable, regular odor removal, making it ideal for busy households. OxiClean provides excellent value and powerful odor-blasting, suited for budget-conscious users who want a deep clean. For pet owners or organic odors, ACTIVE offers targeted enzymatic action, while the Washing Machine Cleaner Tablets are great for those seeking ease of use with versatile compatibility. Beginners will appreciate simple, no-fuss options like Tide, whereas premium buyers might prefer specialized descalers or multi-pack deals for long-term maintenance.