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Best Non-Toxic Washing Machine Cleaners

We vetted washing machine cleaners against the Welpr Standard and here are our top picks.

Camille May

Cofounder & Product Curator

Olushola M. Awoyemi

Medical Reviewer, PhD

Here's what we look for:

Full ingredient transparency, no proprietary blends or hidden ingredients
Fragrance-free preferred; if scented, every ingredient must be fully disclosed and meet our standard
Free from harsh sulfates, quats, bleach, ammonia, parabens, and phthalates
No optical brighteners, artificial dyes, and minimal preservative use
Trusted third-party certifications like EWG VERIFIED™ or MADE SAFE® when available

Best Non-Toxic Washing Machine Cleaners

On Welpr, terms like "non-toxic," "safer," "cleaner," "healthier," and "vetted" are editorial labels based on our own standard for product assessment. They are not guarantees, certifications, or medical claims. Learn more.

The Clean People Washing Machine Cleaner

Meets the Welpr Standard

Top Pick

The Clean People

Washing Machine Cleaner

Free From: Cruelty Free
Highlights: Vegan, Cruelty-free, Money-back guarantee, Tablet, All machines, Septic safe

8.9

Performance score

Where to buy

Amazon
See price

Pros

Eliminates lingering washing machine odors after just one cycle with hot water.
Leaves a light, clean scent that isn't overpowering.
Simple to use: drop a tablet in an empty washer and run a hot cycle.
No plastic packaging around the tablets.

Cons

Tablets can arrive crumbled into powder, making it hard to know the right dose.
A few people found the tablets didn't fully dissolve, leaving chunks in the door seal.

Drop one tablet into an empty drum and run a hot wash cycle. The tablet dissolves as the cycle runs, reaching internal components where mold, mildew, and detergent residue build up over time.
Compatible with front-loaders, top-loaders, and high-efficiency machines, so you don't need to check your washer type before buying.
The formula uses plant and mineral-based cleaning agents rather than synthetic chemicals. Surfactants break down detergent residue, chelating agents tackle hard water mineral deposits, and enzymes handle organic buildup.
Among non-toxic washing machine cleaners, the tablet format is notably hands-off: no measuring, no scrubbing, no mixing solutions. You're basically just running an empty load.
Available in Lemon Fresh and a seasonal Christmas Morning scent. Clean People recommends using one tablet per month, or more often if you have hard water or heavy machine use.

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Seventh Generation Washing Machine Cleaner

Meets the Welpr Standard

Budget Pick

Seventh Generation

Washing Machine Cleaner

Free From: Chlorine Free, Cruelty Free, Formaldehyde Free, Fragrance Free, Low VOC, Paraben Free, PFAS Free, Phthalate Free
Certified: Certified B Corp, EPA Safer Choice, Leaping Bunny, USDA Certified Biobased
Highlights: Cruelty-free, Fragrance-free, Powder, All machines, Septic safe

8.5

Performance score

Where to buy

Amazon
See price

Pros

Eliminates musty and foul odors from washing machines, often after just one or two uses.
Truly fragrance-free; no artificial scent left behind after cleaning.
Powder dissolves completely with no residue left in the drum.
Dead simple to use: drop a pack in and run the clean cycle.

Cons

The dissolvable pod wrapper concerns at least one person, since similar pod films can leave residue or clog lines over time.
Individually wrapped packs inside the box feel like excess packaging for a sustainability-focused product.

Comes as pre-measured powder packs that dissolve fully in the wash drum, so there's no liquid to pour or measure. One pack per empty cycle, once a month.
Uses an oxygen-based cleaning mechanism to break down and lift the odor-causing residue that builds up from everyday laundry soils, rather than just masking smells with fragrance.
Works in front loaders, top loaders, and HE machines, so you don't need to check compatibility before buying.
Unscented and dye-free, which matters if you're specifically shopping for non-toxic washing machine cleaners that won't leave behind fragrance residue in the drum.
Seventh Generation has been disclosing full ingredient lists on packaging since 2012 and publishes them online, so you can verify exactly what's going into your machine before you buy.

Meets the Welpr Standard

Molly's Suds

Washing Machine Cleaner Tablets

Free From: Chlorine Free, Cruelty Free, Dye Free, Formaldehyde Free, Paraben Free, Phthalate Free, Plastic Free
Certified: Leaping Bunny
Highlights: Vegan, Cruelty-free, No synthetic fragrance, Recycled materials, Tablet, All machines, Septic safe

8.7

Performance score

Where to buy

Amazon
See price

Pros

Dead simple to use: just drop a tablet in and run a clean cycle, no disassembly or extra steps needed.
Eliminates musty washer odors effectively, even on older machines with persistent smells.
Lemon scent is noticeable during the cycle but doesn't transfer to the next load of laundry.
Leaves the drum visibly clean with little to no residue to wipe out afterward.

Cons

The 10-count box doesn't cover a full year of monthly cleaning cycles, which a few people found annoying.
One person reported a tablet that didn't fully dissolve during a hot cycle and left no noticeable cleaning effect.
The tablet can clang around noisily in a front-loader drum until it dissolves.

Tablet format that goes directly into an empty drum and dissolves slowly, so it reaches internal parts like the pump, valves, agitator, and drain hose rather than just cleaning the visible drum surface.
Uses active enzymes to break down the residue and grime that build up over regular wash cycles, which is often what causes that musty laundry-room smell rather than the clothes themselves.
Citrus scent comes from orange, lemon, and grapefruit essential oils, so the machine smells noticeably lemony afterward rather than chemical-clean.
Compatible with all washer types (front load, top load, HE), and septic safe, so you don't need to check your manual before using it.
Most well-known washing machine cleaner tablets come from the appliance manufacturers themselves. As a non-toxic washing machine cleaner, this one uses a simpler ingredient approach rooted in enzymes and plant-derived cleaning agents instead of industrial-grade chemicals.
The brand was started by a pediatric nurse after losing her daughter to a chemical exposure. That personal history drives the ingredient standards across the full product line, not just the marketing.

Meets the Welpr Standard

Grab Green

Washing Machine Cleaner Pods

Free From: Cruelty Free, Fragrance Free
Certified: Leaping Bunny
Highlights: Cruelty-free, Made in USA, Fragrance-free, Tablet, All machines

8.2

Performance score

Where to buy

Amazon
See price

Pros

Cleans the drum and gasket effectively, leaving no residue behind.
Virtually no scent during or after the cleaning cycle, which is a clear improvement over stronger-smelling alternatives.
Works well in both front-loading and top-loading machines.
Monthly use over a year-plus keeps machines clean, suggesting consistent long-term results.

Cons

Pods are fragile and frequently arrive crushed or broken open during shipping; multiple people reported losing most of a package this way.

Each pod is a mineral-based tablet you drop into an empty washing machine and run on a regular cycle. It works to dissolve residue, mineral deposits, and the mold or mildew buildup that causes musty odors.
Works in top-loaders, front-loaders, and dishwashers, so one product covers multiple appliances.
Fragrance-free and unscented, meaning there's no added fragrance or masking agent covering up smells. It removes odors rather than layering over them.
Among non-toxic washing machine cleaners, the mineral-based cleaning approach is a departure from the chlorine-heavy tablets that dominate the category.
Grab Green is a small, U.S.-based brand focused on plant- and mineral-derived formulas with responsibly sourced ingredients.

Meets the Welpr Standard

Truly Free

Washing Machine Cleaner

Free From: Cruelty Free, Fragrance Free, Plastic Free
Highlights: Fragrance-free, Tablet, All machines, Septic safe

7.6

Performance score

Where to buy

Amazon
See price

Pros

Dead simple to use: just toss the packet in and run a cycle.
Eliminates musty odors from the drum after a single use.
Works with both front-load and top-load machines.
One person found it successfully removed white residue buildup that switching detergents alone hadn't fixed.

Cons

Results were underwhelming for a few people; the machine smelled fresher but visible grime and buildup remained.
You get a single-use packet, which feels light for the cost compared to multi-use alternatives.

Comes as a single-use sachet you toss directly into an empty drum, then run a hot or heavy cycle. No measuring, no scrubbing involved.
The formula targets the surfactant residue that conventional detergents leave behind over time, particularly in HE machines, which can cause musty odors and redeposit grime onto clothes.
Works with front-load, top-load, HE, and conventional washers, and is septic-safe.
Truly Free recommends using this when you first switch to their laundry products to clear out old detergent buildup, then monthly after that. Among non-toxic washing machine cleaners, it's specifically positioned as a companion to their broader laundry line.
The brand started after the founders' newborn developed a severe rash traced back to chemicals in their laundry detergent. Their product line grew out of that experience, with a focus on eliminating conventional surfactants from household cleaning.

How to Swap to Non-Toxic washing machine cleaners:

Here's how to swap to non-toxic washing machine cleaners:

What to know about washing machine cleaners

Washing machine cleaners are used inside an enclosed, warm appliance where residues can linger on surfaces that touch your clothes. Welpr looks at the formula's transparency, fragrance approach, and whether it avoids harsh ingredients like bleach, synthetic fragrance, and sulfates.

Because residues can transfer to laundry, the cleaner's ingredients indirectly contact your skin through the fabrics you wear.
Many conventional machine cleaners rely on undisclosed fragrance blends, optical brighteners, or bleach-based formulas that leave behind traces in the drum.

Review what you already use

Check the label or product page of your current washing machine cleaner. Look for vague terms like "proprietary blend" or unlisted fragrance ingredients, which signal low transparency.

Flag products that list "fragrance" or "parfum" without specifying what's in it, or that contain bleach, ammonia, sulfates (SLS/SLES), or optical brighteners.
If the label is hard to find, check the brand's website — transparent brands will list every ingredient online.

Use your current cleaner more safely

If you're not ready to replace your machine cleaner right away, a few simple steps can reduce how much residue stays behind. Running an extra rinse cycle after cleaning helps flush leftover formula from the drum.

After running the cleaning cycle, run one additional empty hot-water rinse to help clear residue before your next load of laundry.
Leave the washer door or lid open after cleaning to let the drum air out and dry completely.

Choose a cleaner replacement

Look for washing machine cleaners with fully disclosed, simple ingredient lists and no synthetic fragrance, bleach, or optical brighteners. Fragrance-free formulas are the best starting point, and if scented, the fragrance should come from essential oils or fully disclosed sources.

Certifications like EWG VERIFIED™ or MADE SAFE® are a good sign, but also confirm the brand lists every ingredient — transparency matters as much as any seal.
Click the button above to shop Welpr Approved washing machine cleaners.

Camille May

Cofounder & Product Curator

Camille May is the co-creator of Welpr and a guide for clean living. After selling her last company in the health food space, she went non-toxic while working to heal an autoimmune condition....

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Olushola M. Awoyemi

Medical Reviewer, PhD

Olushola M. Awoyemi (aka Shola) is a board-certified toxicologist and a research scientist with a PhD in Environmental Toxicology. Shola's long-term ambition is to be recognized as a world-renowned expert in toxicology,...

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