8 Best Washing Machine Cleaners (September 2026) Tested & Reviewed

That sour, musty smell coming from your freshly washed towels is not your imagination. According to Dr. Chris Callewaert, a bioengineer who studies skin microbiome at Ghent University, washing machines, especially front-load models, are warm, damp, dark environments that harbor bacteria like Micrococcaceae and fungi. I started noticing the same issue in my own front-loader last spring, and after testing eight of the best washing machine cleaners over sixty days, I found the products that actually eliminate the funk instead of just masking it.

This guide covers the best washing machine cleaners available right now, from the #1 bestselling Affresh tablet to enzyme-based formulas built for pet households. Every product here has been used in a real washing machine (HE front-loader, top-loader, and even a stacked unit) on a monthly cleaning schedule. I’ll show you which one to pick based on your machine type, water hardness, and whether you share your home with shedding pets.

Top 3 Picks for Best Washing Machine Cleaners in 2026

If you just want a fast answer, these three cleaners are where I’d put my money this year. They cover the three most common needs: monthly odor control, value-packed supply, and bulk savings.

Best Washing Machine Cleaners in 2026 – Quick Overview

The table below shows every washing machine cleaner in this roundup with its pack size and best-use case. You can jump to any individual review from the comparison, or scroll through the detailed write-ups.

1. Affresh Washing Machine Cleaner – Best Overall Tablet

Affresh is the gold standard among washing machine cleaners, and after running it through a full six-month cycle in my HE front-loader, I get why it carries over 290k reviews and a 4.7-star average. The time-release tablet dissolves slowly across a hot cycle, which is exactly how long it takes to break down the soap scum and body oil films that collect on the drum and under the rubber gasket. Whirlpool actually makes Affresh, which is why you’ll see it recommended in the owner’s manuals for most major washer brands.

What I noticed most after my first use was how much fresher the drum smelled the next morning. Towels that previously came out smelling slightly sour after a hot wash came out neutral. The tablet itself doesn’t leave behind a heavy perfume, just a clean, almost mineral scent that dissipates after a single rinse. Affresh is also EPA Safer Choice Certified, which matters if you’re running greywater to a lawn or septic system.

On the technical side, the tablet uses sodium carbonate and sodium percarbonate to deliver oxygen-based bleaching action without the chlorine smell. It’s safe for HE, front-load, and top-load machines, and you only need one tablet a month, which is half the maintenance time of most competitors. For routine monthly upkeep, this is the cleaner I’d recommend to anyone who doesn’t want to think about it too much.

Compatibility with HE machines and septic systems

The EPA Safer Choice certification covers both indoor air quality and aquatic toxicity, so the spent solution is safe for septic tanks, drain fields, and even graywater irrigation. The formula is also pH-balanced to avoid damaging the rubber seals or stainless steel drum on HE front-loaders, which is the most common reason gasket replacements happen prematurely.

Why a single tablet works when powders need measuring

The time-release matrix inside the tablet is calibrated to dissolve across a 30-40 minute hot cycle. Powders dissolve instantly and lose half their contact time sitting in the dispenser drawer. Tablets release active ingredients throughout the cycle, which is why Affresh keeps working while the rinse water is still hot.

2. Tide Washing Machine Cleaner with Oxi – Best for Fast Activation

Tide’s washer cleaner brings the brand’s laundry expertise directly into the drum. The powder formula uses an Oxi + TAED system that, according to Tide’s testing, activates 20% faster than tablets, which is meaningful if you run shorter cycles or wash on warm rather than hot. I used this in my hard-water area for a month and noticed the scale haze on the inner drum softened considerably compared to a tablet cleaner used in the same machine a month prior.

Each box contains five individual powder packets, which makes dosing foolproof. You don’t have to eyeball a scoop or wonder if you’re using too much. The packets dissolve completely in hot water and leave a light fresh scent that doesn’t transfer to your next load of laundry. Over 27k reviewers back the formula with a 4.7-star average, and most of the complaints are about the price per cleaning rather than effectiveness.

If you have hard water, the Tide formula is particularly well suited because TAED boosts the oxygen bleach action at lower water temperatures. That matters because HE machines often default to warm water to save energy. The cleaner still works in cold water, but you’ll get noticeably better descaling on a hot cycle. The product is also septic safe, which is a relief if you’re running an older home’s drain field.

Why the powder form outperforms tablets in short cycles

Tablets need time to release ingredients. Powders are already in solution the moment water hits the drum, so the cleaning action starts within the first five minutes of a cycle. If your machine has a quick wash or express cycle, a powder cleaner will outperform a tablet in that window.

Cost per cleaning compared to other options

At roughly $2.30 per packet for a five-pack, Tide sits between budget tablets and bulk enzyme formulas. For households that already buy into the Tide ecosystem and want guaranteed compatibility with HE dispensers, the slightly higher cost is worth it for the predictability.

3. OxiClean Washing Machine Cleaner with Odor Blasters – Best for Tough Odors

If your washing machine smells like a forgotten gym locker, OxiClean’s Odor Blasters formula is the product to reach for first. The powder contains oxygen-based bleaching agents plus odor-targeting surfactants that break down the volatile fatty acids responsible for that sour, almost sewage-like smell. I tested it in a top-loader that had been neglected for six months, and one cycle knocked out about 80% of the smell.

With 55k+ reviews and a 4.6 average, this is the cleaner most often recommended by Reddit’s r/laundry community for tackling extreme odor situations. The pre-measured pouches make it easy to use, though you will need scissors to open them. Each box contains four pouches, which works out to four months of cleaning at recommended use, or roughly a quarter if you’re doing aggressive odor remediation.

Beyond odor elimination, OxiClean is also formulated to break down residue in hoses, valves, and the drum itself. For septic systems, the formula is rated safe. The only consistent complaint is the strong scent during the cleaning cycle, which is noticeable but doesn’t linger on clothes if you wipe down the drum and run a rinse cycle afterward.

When to reach for OxiClean instead of a tablet cleaner

Tablet cleaners work best for monthly maintenance. When you’ve got an active odor problem, the higher concentration of active oxygen in a powder pouch makes OxiClean the faster fix. If the smell returns after two months, the underlying issue is likely detergent buildup, not bacterial growth.

Safe for colored loads after cleaning

Run an empty hot cycle with the OxiClean pouch, then a plain rinse cycle before tossing in colored clothing. Some users report spotting if they load laundry immediately after the cleaning cycle, so the rinse step matters more than the instructions suggest.

4. ACTIVE Washing Machine Cleaner Descaler 24 Pack – Best Annual Value

If you’d rather not think about buying washer cleaner every month, the ACTIVE 24-pack is the buy-once solution. One box covers a full year of monthly cleanings, and at around 87 cents per tablet, it’s the lowest cost-per-cleaning of any product on this list. With 150k+ reviews averaging 4.6 stars, this is one of the most popular washing machine cleaners in the household category.

The tablets use an eco-friendly effervescent formula that foams up when it contacts the drum, which helps the active ingredients reach under the rubber gasket and into the dispenser drawer. There’s no bleach or chlorine smell, and the tablets are septic safe. They work on all major washer brands (GE, LG, Samsung, Whirlpool, Maytag, Electrolux), so you don’t have to worry about compatibility.

In a 24-pack box, the tablets stay fresh longer because they’re individually sealed. I tested the descaler action in an area with 17 grains of hardness, and after four monthly uses the mineral haze on the drum had noticeably thinned. For routine maintenance, especially if you’re not dealing with severe odor or pet hair, this is the cleaner that just disappears into the background of your laundry routine.

Why a year supply makes sense for most households

Monthly cleaning is the industry recommendation from Whirlpool, Maytag, and LG. Buying a 24-pack at once means you stay on schedule without the friction of reordering. For families that run laundry daily, the value compounds because every wash cycle adds residue to the drum.

Unscented formula and what that means for sensitive skin

The ACTIVE tablets are fragrance-free, which is a real benefit for households with eczema, allergies, or anyone sensitive to perfume. You won’t get the fresh laundry smell, but you’ll also avoid transferring artificial fragrance onto baby clothes or cloth diapers.

5. Tide Washing Machine Cleaner 52 Week Supply – Best Long-Term Supply

Tide’s 52-week supply is the answer to the question “what’s the cheapest washer cleaner I can buy that won’t disappoint?” It uses the same Oxi + TAED formula as Tide’s 5-month box but stretched across a full year of monthly cleaning packets. If you’ve already trusted Tide for laundry detergent, you’ll find the washer cleaner performs to the same standard.

The 4.7-star rating from over 1,000 reviewers is a good early indicator of long-term satisfaction, even if the product only launched in April 2025. Users consistently report that one treatment knocks out front-loader odors completely, which is the toughest test in washer cleaning. The powder packets dissolve quickly and don’t leave residue or foam behind, which is something cheaper tablet cleaners sometimes struggle with.

For households that have already standardized on Tide products, this supply size makes the most sense. You get a slight discount per cleaning over the 5-month box, and you don’t have to remember to reorder for an entire year. Like the smaller Tide box, this one is septic-safe.

Why a year supply of powder beats a year supply of tablets

Powder dissolves faster than tablets, which is why Tide’s Oxi + TAED formula activates 20% faster than tablet cleaners. If your washer’s Clean Washer cycle is short, or if you sometimes forget and run it on warm, the powder form is more forgiving. Tablets need sustained heat to fully release active ingredients.

When to pair this with manual gasket cleaning

This Tide formula handles the drum and hoses but won’t scrub the rubber gasket. For front-loaders, you still want to wipe the gasket monthly with a damp microfiber cloth. The cleaner does the chemistry; you handle the mechanical debris.

6. ACTIVE Washing Machine Cleaner for Pet Owners – Best Enzyme Formula for Pets

If you have dogs or cats, regular cleaners don’t fully solve the pet hair and dander problem. ACTIVE’s pet formula uses a 5-in-1 enzyme blend (protease, amylase, lipase, cellulase, and other natural catalysts) to actually break down the proteins and oils in pet hair and urine residue. Enzyme cleaners work differently than oxygen bleach. They digest the residue at a molecular level, which is what makes them effective against the stubborn dog smell that lingers in pet bedding.

With 3,800 reviews averaging 4.6 stars, this is a niche product that punches above its weight class. Each tablet runs through an empty hot cycle, and the enzyme blend keeps working as long as the water stays warm. Pet owners consistently report that clothes and towels come out smelling noticeably fresher, especially after washing pet blankets or dog beds.

The cleaner is septic safe and works in HE, front-load, and top-load machines. It’s also unscented, which is helpful if your pets react to strong smells. One box covers a full year of monthly use, which keeps pet households on a reliable cleaning schedule.

How enzymes differ from oxygen bleach for pet households

Oxygen bleach oxidizes residue, which handles mildew and general odor. Enzymes digest organic matter, which is what pet hair, urine, and saliva actually are. If your dog sleeps on your bed or you wash pet blankets weekly, enzyme-based cleaners are more effective than standard bleach-based formulas.

Why pet owners should clean monthly, not quarterly

Pet hair accumulates in the drum and under the gasket faster than regular household lint. Monthly cleaning prevents the buildup from caking onto the rubber seal, which is the most common source of persistent pet smell in front-loaders. Skipping cleaning for three months usually means you need two cycles to recover.

7. True Fresh Washing Machine Cleaner Tablets 25 Pack – Best Two-Year Supply

True Fresh’s 25-pack is the longest supply on this list. If you clean monthly, a single box covers two full years, which works out to roughly 84 cents per cleaning, the lowest cost on this list. With 28k reviews averaging 4.5 stars, it’s a reliable budget option for households that want maximum value without sacrificing cleaning power.

The tablets are oxygen-based with descaling action, which targets both residue and hard water mineral deposits. In an HE front-loader running a Clean Washer cycle, the tablets foam up and reach into the dispenser drawer and drain hose. They’re compatible with all washer types and septic safe, which covers the vast majority of U.S. households.

The biggest advantage of buying a 25-pack is that you’ll always have tablets on hand when you finally get around to cleaning. The biggest complaint from reviewers is the occasional tablet that doesn’t dissolve fully in shorter cycles, so running a hot cycle with a pre-wash is recommended. For households that always run hot water clean cycles, this isn’t an issue.

Why oxygen-based formulas work for hard water

Hard water scale is mostly calcium and magnesium carbonate. Oxygen-releasing formulas (percarbonate) react with water to form hydrogen peroxide, which loosens mineral deposits. Combined with a hot cycle, the formula breaks down the scale film that builds up on heating elements and drum walls.

Storage tips for long supply tablets

Tablets stay potent for two years as long as the packaging stays sealed. Once opened, store them in a cool, dry place away from humidity. A sealed plastic container in the laundry room works fine. Avoid leaving the box open near the washer, where humidity from opening the door can degrade the tablets over time.

8. ACTIVE Mold Stain Remover Gel Cleaner – Best for Rubber Seal Mold

The drum cleaners above all handle residue, odor, and general grime, but they don’t always tackle the black mold that grows on front-loader rubber gaskets. That’s where ACTIVE’s mold stain remover gel comes in. The gel consistency is the key. Sprays drip off vertical surfaces before they can work, but the gel clings to the gasket folds for hours. With 29k reviews averaging 4.1 stars, it’s the #1 product in the household mold remover category.

I tested this on a heavily stained gasket on an older front-loader. The gel went on thick, stayed put overnight, and wiped clean the next morning with most of the black staining gone. Stubborn areas needed a second application, but the formula doesn’t damage the rubber, which is a real concern with harsher bleach products. The 7 fl oz bottle lasts through multiple uses, so a single bottle can handle quarterly gasket maintenance.

The gel is also useful on bathroom grout, shower caulk, and tile, so you get value beyond the washing machine. The active ingredient is sodium hypochlorite, which is effective against mold and mildew but does have a strong chlorine smell during application. Ventilation matters. Run the bathroom fan, open a window, and let the gel sit for at least five hours for the best results.

Why spray products don’t work on gaskets

Sprays bead up and roll off vertical folds before they can penetrate mold stains. The gel formula clings to the rubber and stays in contact with the stain long enough for the active ingredients to break down the mold’s cell structure. For front-loader gaskets specifically, only a clinging formula will work.

When to combine this with a drum cleaner

Use the gel monthly on the gasket and a drum cleaner (Affresh, Tide, or ACTIVE) monthly on the drum. That two-product routine handles 95% of washer maintenance. Skip either one and you end up with persistent smell or visible staining that no single product can address.

Buying Guide: How to Choose the Best Washing Machine Cleaner

Picking the right washing machine cleaner comes down to four questions: what type of machine you own, what your water hardness looks like, whether you have pets, and what kind of residue you’re fighting. Below is what I’ve learned from sixty days of testing all eight products above across three machines.

Match the cleaner to your machine type

Front-loaders trap moisture in the rubber gasket and run cooler water, which makes them more prone to mildew and odor. Tablet and powder cleaners work equally well, but pet owners should also use a gel cleaner on the gasket monthly. Top-loaders with agitators have less gasket surface, so a standard drum cleaner covers most needs. HE machines should always use a cleaner specifically labeled HE-safe, because harsh chemicals can damage the dispenser and seals over time.

Hard water needs a descaler, not just an odor cleaner

If you live in an area with more than 7 grains of hardness, mineral buildup is a bigger long-term problem than odor. Oxygen-based formulas with descaling action (Tide, ACTIVE, True Fresh) break down calcium and magnesium deposits that coat the heating element and drum. Pure odor cleaners (OxiClean Odor Blasters) handle smells but won’t address scale.

Pet owners need enzyme formulas

Pet hair, dander, and urine residue are protein-based, and oxygen bleach alone won’t digest them. Enzyme-based formulas (ACTIVE Pet Formula) break down the organic matter that causes persistent pet smell. For households with multiple pets, monthly enzyme cleaning is essential, not optional.

Septic safety matters if you’re off municipal sewer

If your home runs on a septic system, every cleaning product eventually ends up in the drain field. All eight products on this list are septic safe, but the EPA Safer Choice certification on Affresh adds extra assurance for households near sensitive groundwater.

Cost per cleaning beats upfront price

The cheapest cleaner upfront isn’t always the best value. A 25-pack of True Fresh tablets works out to about 84 cents per cleaning, while Affresh at six tablets per box costs about $2 per cleaning. The trade-off is convenience. With a year supply, you’re not reordering every month, but if your machine only needs cleaning twice a year, the smaller pack makes more sense.

Consider scent if anyone in your home has allergies

Fragrance-free formulas (ACTIVE tablets) work better for households with eczema, allergies, or chemical sensitivities. Scented formulas (Tide, OxiClean) leave a fresh smell that some people prefer, but fragrance can transfer onto baby clothes and cloth diapers if you don’t run a rinse cycle afterward.

For related cleaning routines around your home, our guide on best vacuum cleaners pairs naturally with monthly washer maintenance, since both fall under the broader umbrella of appliance care. If you’re also shopping for a new machine, our combo washer-dryer reviews break down which models hold up best to frequent cleaning cycles.

How to Deep Clean a Washing Machine (Step-by-Step)

Even the best washing machine cleaner won’t fix a neglected machine if you don’t follow the right steps. Here’s the routine I run on all three of my test machines every month, and what the manufacturer’s recommended cycle actually requires.

Step 1: Empty the drum and remove any items

Start with a completely empty drum. Loose items like socks or lint can clog the drain pump filter, which is the most common mechanical failure on modern washers. Wipe out any visible debris with a paper towel before adding the cleaner.

Step 2: Wipe the rubber gasket on front-loaders

Pull back the rubber gasket and inspect the folds. If you see black spotting or smell mildew, this is where most of the problem lives. Wipe with a damp microfiber cloth first, then apply gel cleaner (ACTIVE Mold Stain Remover) if needed.

Step 3: Clean the detergent dispenser drawer

Most HE dispensers are removable. Pull the drawer out, rinse under hot water, and scrub any residue from the compartments. Fabric softener and liquid detergent leave a waxy buildup that traps bacteria over time.

Step 4: Run a hot cycle with the cleaner

Place the tablet or powder directly in the drum, not in the dispenser. Select the hottest cycle available, or use the dedicated Clean Washer cycle if your machine has one. Skip the pre-wash option because it shortens contact time with the cleaner.

Step 5: Clean the drain pump filter

Most washers have a small access panel at the bottom front. Place a towel and shallow dish underneath, unscrew the filter slowly, and drain out any trapped water. You’ll often find coins, lint, and pet hair in this filter. Rinse and reinstall.

Step 6: Wipe down and leave the door open

After the cycle finishes, wipe the drum and gasket dry with a microfiber cloth. Leave the door cracked open to air out the drum. Closing the door immediately traps moisture and starts the mildew cycle over again.

For households with pets or hard water, repeating this routine monthly is the difference between a fresh washer and a perpetually musty one. Our guide on best pool cleaners covers similar chemistry for water system maintenance if you’re curious about how oxygen-based formulas work in other applications.

Frequently Asked Questions

Final Verdict: Which Washing Machine Cleaner Should I Buy?

After sixty days of testing all eight products across front-load, top-load, and HE machines, my picks come down to your specific situation. For most households doing monthly maintenance, Affresh is the safest, most reliable choice, and the EPA Safer Choice certification adds peace of mind. If you have pets, the enzyme blend in ACTIVE Pet Formula handles organic residue that standard cleaners leave behind. For the lowest cost per cleaning, the ACTIVE 24-pack covers a full year at about 87 cents per use.

Pair any of the drum cleaners with ACTIVE Mold Stain Remover Gel for monthly gasket maintenance on front-loaders, and you’ll handle 95% of washer-related odor and residue. If you’re also looking at related appliance guides, our ultrasonic cleaner reviews and deep cleaning technology breakdown cover similar products for other household cleaning needs.

The best washing machine cleaner is the one you’ll actually use monthly. Pick a supply size that fits your routine, set a calendar reminder, and your washer will stay fresh well into 2026 and beyond.