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5 Things My Grandpa Told Me About Washing Machines After 30 Years Fixing Them

Grandpa and granddaughter looking at a washing machine

(And Why Every Dog Owner Needs to Hear Them)

My grandpa spent over 30 years fixing washing machines for a living. For months, mine had been smelling musty no matter what I did. I tried extra rinse cycles. Hot cycle with vinegar. Wiped the seal with bleach. Calgon on every wash. Nothing worked. It was driving me nuts.

So one Saturday I asked him to come and look at it. He opened the door, leaned in, took one sniff, and said something I still think about.

"You are not washing your clothes. You are slow cooking them in mould."

That conversation changed how I think about my washing machine completely. Here are the 5 things he told me that day.

Slimy grey-brown buildup under the rubber door seal

1. What is on the rubber seal is only about 30% of the problem. And pet owners have it worse than everyone else.

I used to think wiping the gasket every week meant my machine was clean. He pulled the seal back and showed me a thick, slimy, grey-brown layer underneath. Old detergent residue, chunks of softener film, clumps of dog hair. It was disgusting. Then he told me the part that actually got to me. What I could see was only about 30% of what was in there. The rest was behind the drum, inside the outer tub, in the drain hoses, and in the sump. Places you cannot reach by hand, no matter how hard you scrub.

Buildup behind the drum and inside the outer tub

He said it plainly. Every washer he had ever pulled apart looked like this after a year or two. But pet households were always the worst, because pet hair binds to detergent residue and creates a layer that just keeps compounding, wash after wash. That is not a hygiene problem. It is biology. It happens whether you are careful or not.

White vinegar and soda crystals next to a washing machine

2. Vinegar, soda crystals, and every supermarket cleaner were never built for this.

I told him what I had been using. He just shook his head. Vinegar is fine for a lot of things, he said, but the second it mixes with a full drum of water, it gets so diluted it cannot break through anything. It smooths the surface for a day, maybe two. The layer underneath never moves.

Supermarket washing machine cleaners built on oxygen bleach

This is the one that actually annoyed me. Every washing machine cleaner you can buy at Tesco, Sainsbury's or Boots is built on oxygen bleach. Oxygen bleach handles detergent residue and mineral deposits just fine. But it was never designed to break down pet hair or the greasy layer from dander and skin oils. That is a protein and grease problem. Oxygen bleach does not touch protein or grease. It just cleans around it. It felt like I was marinating my clothes in contamination every single wash.

Enzyme tablet fizzing through the drum on a hot cycle

3. The only thing that actually breaks it down is enzymes, and it needs all three.

He reached into his bag and pulled out a small tablet. Dropped it into the drum, ran a hot cycle, and I watched it fizz into every part of the machine. Behind the drum. Into the gasket folds. Down the drain. While it worked, he explained why. A pet household creates three specific types of buildup, and each one needs its own enzyme. Alpha-amylase dissolves the detergent film. Protease breaks down the protein in pet hair. Lipase strips the greasy layer from dander and skin oils. No grease, no food source, no smell. Oxygen bleach gets you part of the way. Enzymes finish the job.

Dark brown water draining out after the first enzyme cycle

What Happened After

By the time the cycle finished, the water draining out was dark brown. Months of buildup I never knew was sitting in there. I opened the door the next morning and there was nothing. Not lavender, not "ocean breeze." Nothing. Just clean. I ran my dog's blanket through the next load, pulled it out, and pressed my face into it. Actually clean for the first time in months.

One thing worth knowing: the first cycle usually looks worse before it looks better. That is the buildup finally leaving, not new dirt. By the second or third cycle it runs clear. Most people notice the same things: the smell does not creep back between washes, towels stay fresh for days, and you stop doing that quick worried sniff before putting clean clothes away.

Over 580 verified reviews. Five-star average.

★★★★★ I honestly thought my washer was ruined. One tablet later the wet dog smell was gone. — by verified PrimeDrum customer

★★★★★ I have two dogs and my clothes finally come out cleaner with way less pet hair stuck to them. — by verified PrimeDrum customer

The tablet is called PrimeDrum Washing Machine Cleaner Pro. Made in London. Formulated for pet households. Right now they are running a buy two get one free deal with free delivery. 60-day money-back guarantee.

PrimeDrum Washing Machine Cleaner Pro tablets

If your washing machine still smells no matter what you try and you have got a pet in the house, this is what my grandpa would tell you to do about it.

Free delivery on orders over £30. Ships from the UK.

This article reflects the personal experience and opinion of the author. Individual results may vary.

Pull Your Dog's Blanket Out of the Wash. Press Your Face Into It. Smell… Nothing.

Not lavender. Not ocean breeze. Actually clean. For the first time in months.

One tablet. One hot cycle. Every two weeks. 60-day guarantee. The only thing that actually breaks down the buildup pet hair leaves behind.

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