Regardless of whether you’re single and living alone or running a bustling household of six, it’s fairly unanimous that most of us dread doing the washing.
After building up during the week, there are few among us who enjoy tackling load after load, let alone cleaning the machine itself. But experts say not doing so could be making us sick. UK scientists have uncovered that our washing machines may be harbouring more than socks on the loose.
According to a study published in PLOS ONE, the average household machine could be a hidden haven for antibiotic-resistant bacteria.
Researchers from De Montfort University investigated how domestic machines clean healthcare uniforms, and despite a hospital-issued directive to wash uniforms at 60°C or above, a lot of home machines didn’t reach those temperatures. Even more concerning, bacteria, including drug-resistant strains like Staphylococcus aureus, were still alive on fabrics post-wash.
While the study focused on healthcare settings, the implications ripple far wider. If your machine isn’t reaching proper heat levels, it could be spreading these bugs across your kids’ school uniforms, gym gear and even your linen cupboard.
Enter: the superbugs
The research found that biofilms – slimy layers of bacteria that cling to the inside of washing machine drums – can protect and preserve superbugs. These tiny communities thrive in moist environments, feeding off detergent residue and dead skin cells.
What’s more, by regularly using antibacterial sprays and bleach-based cleaners, we might be killing off the weaker bacteria and leaving the hardier, antibiotic-resistant ones to multiply. In other words, it might be making the problem worse.
If you’re healthy, this probably won’t turn your next load of laundry into a medical emergency. But for families with babies, elderly parents or anyone with a compromised immune system, the risk is real.
Experts warn that cold or eco cycles, while energy-efficient and gentle on clothes, may not be tough enough on germs. But if the trade-off is bacteria surviving in your family’s washing, it may be time to rethink your cycle.
How to keep your washing machine clean
Go as hot as possible
For towels, sheets, underwear and anything soiled, aim for a cycle at 60°C or higher. It’s not necessary for every load, but it’s important when you really want to kill bacteria.
Don’t overload the drum
Stuffing the machine full might save time, but it can stop detergent and water from circulating properly. Clothes need room to move.
Give your machine a good once-over
Run an empty hot cycle with a cup of white vinegar or a washing machine cleaner solution once a month. This helps break down biofilms and remove built-up grime.
Leave the door open
Let your machine dry out between washes to prevent mould and mildew. Wipe down the rubber seal regularly – it’s a common spot for hidden gunk.
Separate the gross stuff
If someone in your home is sick or you’re washing nappies, cleaning cloths or uniforms, wash them separately – and on a hotter cycle if possible.
Rethink uniforms
If you work in healthcare, check if your employer offers industrial laundering. It’s the safest way to prevent bringing hospital-grade bugs into your home.
