Is Your Washing Machine Actually Clean? Why Washer Maintenance Matters
We use our washing machines to clean things, so it’s easy to assume the machine itself stays clean in the process. Unfortunately, that isn’t always the case.
Washing machines regularly combine several things microorganisms love: moisture, warmth, organic debris, detergent residue, and areas with limited airflow. Over time, residue from clothing, skin cells, body oils, lint, fabric softeners, detergents, and other organic material can accumulate in areas that don't completely dry between loads.
Add persistent moisture, and you can create an environment that supports biofilm, bacteria, yeast, and mold growth.
This is especially important for households dealing with mold or indoor environmental concerns. You don't want to carefully clean your home, clothing, bedding, and other washable belongings only to continually reintroduce contamination during the laundering process.
Where Does Mold Hide in a Washing Machine?
Some of the most important areas are also the easiest to overlook.
Top-Loading Washers
If you have a top loader, pay particular attention to:
Underneath and around the agitator. Depending on your machine, the agitator may be removable. Residue and microbial growth can accumulate underneath it where routine cleaning doesn't reach.
The upper lip of the drum. Open the lid and look underneath the top edge of the washer basket. This area can remain damp and collect detergent residue, lint, and debris.
Detergent and fabric-softener dispensers. Remove and clean them when possible.
The underside of the lid and surrounding surfaces.
Front-Loading Washers
The rubber door gasket is one of the biggest trouble spots in a front-loading washer.
Pull back the folds of the gasket and look carefully. Water, hair, lint, detergent residue, and other debris can collect deep within these folds.
Don't simply spray the area and assume it is clean. Physically wiping or scrubbing away visible buildup is important.
Also inspect detergent drawers and dispensers. Many can be completely removed for cleaning, and you may be surprised by what is hiding behind them.
Why We Recommend Enzyme-Based Washer Cleaners
Physical removal should always come first. If you can see mold, slime, or residue, wipe or scrub it away rather than simply trying to kill it with a chemical.
After physical cleaning, we recommend periodically running an enzyme-based washer cleaner, such as iWoofie or a comparable product, according to the manufacturer's directions.
Enzymes help break down organic residues such as body oils, sweat, proteins, fats, and other soils that can accumulate inside a washer and contribute to biofilm. They can also help loosen detergent and soap-associated buildup, allowing residues and microbial contamination to be more effectively flushed from areas you can't easily reach by hand.
This is an important distinction: the goal isn't simply to kill mold and bacteria. It's to remove contamination, break down the residues that help support it, and make the washer less hospitable to future microbial growth.
Let Your Washer Dry Between Loads
One of the simplest things you can do doesn't require any cleaning products at all:
Leave the washer open between cycles.
Mold requires moisture to grow. Closing the lid or door immediately after removing wet laundry can trap moisture inside the machine and slow evaporation.
For top loaders, leave the lid open.
For front loaders, leave the door slightly open when it is safe to do so.
Allowing airflow into the machine helps the drum, gasket, and other damp surfaces dry more quickly.
What If Your Washer Has Been Sitting for Several Days?
Here's another habit we recommend, especially for mold-sensitive households.
If your washing machine hasn't been used for three days or longer, consider running an empty rinse cycle before adding clothing.
Water can remain in portions of the washer that you can't see, including pumps, hoses, sumps, seals, and drainage components. When water sits stagnant for several days, microbial growth and biofilm can increase.
Running a rinse cycle helps flush out some of that stagnant water before you put your clothing into the machine.
How Often Should You Clean Your Washer?
We recommend using an enzyme-based cleaner and wiping down reachable components every 30 loads. For an active family, that may be once or twice a month, but may be longer if you use your washing machine less frequently.
In addition to cleaning, it is important to periodically inspect your machine.
Look for:
Musty or sour odors
Visible discoloration
Slime or residue
Buildup in detergent dispensers
Debris underneath gasket folds
Residue underneath the upper drum lip
Clothing that smells musty shortly after washing
If you're seeing or smelling a problem, don't simply mask the odor. Find and clean the source.
A Cleaner Washer Means Cleaner Laundry
Your washing machine is part of your home's indoor environment too.
If you're putting time and effort into reducing mold, dust, allergens, and microbial contamination throughout your home, your washer shouldn't be overlooked.
The goal isn't to make your washing machine sterile. That's neither realistic nor necessary.
The goal is much simpler:
Remove buildup. Reduce persistent moisture. Encourage drying. And don't give mold a comfortable place to establish itself.
A little routine maintenance can go a long way toward making sure the machine you depend on to clean your belongings isn't quietly working against you.
The Great Indoors | Education Over Fear
At The Great Indoors, we believe understanding why mold grows is one of the best tools you have for preventing it. Mold needs the right environment to become established. Control the environment, and you can dramatically reduce the opportunity for growth.
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