Do You Really Need to Dry-Clean Slacks After Every Single Wear? 5ch Says ‘Once a Year Is Plenty’

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The story

A thread kicked off after someone said they told a coworker, “You’re supposed to send slacks to the dry cleaner every single day you wear them,” and the coworker was shocked. On 5ch, plenty of people chimed in with “once a year is plenty” and “just spray some Febreze on them now and then,” while others pushed back with, “If you’re dry-cleaning them after every wear, you might as well just buy new ones daily and toss them.” The discussion spread to cover how to deal with sweat in summer, the traditional British method of brushing (not washing) wool suits, comparisons to school uniforms and bath towels, and even a generational divide over whether people even know or use the word “slacks” anymore.

What people said

1AnonymousSep 2, 2026 14:37
Wearing dirty pants for days on end? lol
2AnonymousSep 2, 2026 14:38
Once a year, right?
Just spray some Febreze on them now and then.
4AnonymousSep 2, 2026 14:38
How much do you even spend on dry cleaning per year?
7AnonymousSep 2, 2026 14:41
These days, it's rarer to see someone actually wearing slacks.
8AnonymousSep 2, 2026 14:42
I get it.
They get all damp and gross after just one day.
10AnonymousSep 2, 2026 14:44
Wearing long compression leggings (spats) underneath helps.
11AnonymousSep 2, 2026 14:45
If you're dry-cleaning them after every wear, you might as well just buy a new pair daily and toss them.
13AnonymousSep 2, 2026 14:46
Women don't send their skirts and pants to the cleaners every single time either.
15AnonymousSep 2, 2026 14:47
Do you wash your hands every single time you use the bathroom? lol
21AnonymousSep 2, 2026 14:51
Re: #15
Honestly, it's scarier NOT to wash them every time.
16AnonymousSep 2, 2026 14:48
You can totally tell when someone's been wearing the same slacks for days straight.
18AnonymousSep 2, 2026 14:49
What even is a "surakkusu" (slacks)?

Or is it about your toupee (zura) slipping while everyone snickers (kusukusu) at you? (it's a pun — surakkusu sounds like zura + kusukusu)
19AnonymousSep 2, 2026 14:50
Oh, the kind they sell in the clothing section on the 2nd floor of the supermarket?
20AnonymousSep 2, 2026 14:51
In Britain, the gentleman's country, wool jackets and trousers basically were never washed back then and still aren't now.
Wear them for a day, hang them properly on a hanger to keep their shape, brush all the dust off carefully with a soft brush, and that's it.
23AnonymousSep 2, 2026 14:53
Were you washing your school uniform jacket (gakuran) and trousers every single day back in middle school?
26AnonymousSep 2, 2026 14:55
Just wear something more stylish, like cargo pants or chinos.
27AnonymousSep 2, 2026 14:58
Summer really does make you sweat buckets.
Around the time it became acceptable to just wear a polo shirt on top, I picked up a few pairs of "Kandou Pants" (a machine-washable trouser line).
I wear those from early summer until just before autumn.
Being able to wash them at home makes life so much easier.
30AnonymousSep 2, 2026 15:18
I don't think I've said the word "slacks" out loud once in my entire life.
41AnonymousSep 2, 2026 16:00
Re: #30
That's just you.
You're the only one laughing ("kusa") here too.
31AnonymousSep 2, 2026 15:18
Every weekend I drop off 5 dress shirts and 1 pair of trousers at the cleaners.
That's just the standard summer dry-cleaning routine for your average salaryman.
33AnonymousSep 2, 2026 15:19
Wearing a suit in 40°C heat, lolololol
I mean, come on, lolololol
43AnonymousSep 2, 2026 16:16
Re: #33
What, are you working in a short-sleeve button-down and shorts or something?
Realize how out of touch you are.
34AnonymousSep 2, 2026 15:20
Lately, sweet potato flowers — which normally only bloom in the tropics — have been blooming everywhere and causing a stir.
That basically means Japan's climate has already turned tropical.
If you don't dress for the tropics, you'll die out there.
35AnonymousSep 2, 2026 15:21
Sounds like you wash your bath towel every single day too, then.
36AnonymousSep 2, 2026 15:23
Yeah, after wearing them for a day, the smell around the crotch area does start to bother you.
38AnonymousSep 2, 2026 15:33
A bath towel you just toss in the washing machine, so it's basically one use and done.
39AnonymousSep 2, 2026 15:35
Even if people call it cheap, I've stopped buying anything but trousers I can wash at home.
My current workplace has uniforms, but the uniform cleaning service itself only comes twice a month, so I guess that's the real-world standard.
40AnonymousSep 2, 2026 15:52
Back when I was a new hire, I used to send my shirts to the cleaners every single weekend too…
42AnonymousSep 2, 2026 16:00
When I get home, I hang them up somewhere with good airflow.
I mean, I'm obviously not sending them to the cleaners after just one wear.
44AnonymousSep 2, 2026 16:18
Vintage Levi's 501XX?
I've never washed mine, not even once.
46AnonymousSep 2, 2026 16:23
Are you calling 90s ones vintage now too?
Back then, only celebrities could afford to wear those.
47AnonymousSep 2, 2026 16:24
How much are you even spending on slacks alone per year?
49AnonymousSep 2, 2026 16:29
Even if you're unemployed, if you have any sense of style you've at least picked up a pair of Uniqlo slacks.
I'm curious what kind of person doesn't know the word "slacks" or treats it like a dead term.
53AnonymousSep 2, 2026 16:37
"Slacks"?
Aren't those what corporate-drone middle-aged guys wear on their days off?
57AnonymousSep 2, 2026 16:43
Re: #53
The kind of guy who only ever goes to family restaurants.
55AnonymousSep 2, 2026 16:40
I rotate through 5 pairs but don't dry-clean them until the season's over.
After each wear I just douse them in Febreze.
56AnonymousSep 2, 2026 16:41
If you spray way more Febreze than necessary, they end up feeling kind of sticky, don't they?
58AnonymousSep 2, 2026 16:43
I wear 7 pairs in rotation and air them out in the shade on my days off.
I only send them to the cleaners about once a season.

Background and Key Points of This Discussion

Underlying this debate is a gap in perceptions about conventional dry-cleaning wisdom. Suit-fabric trousers are often made from material that can’t be washed at home, but frequent solvent-based dry cleaning can damage the fabric, so industry advice commonly suggests cleaning only when stains or sweat become noticeable, or roughly once or twice a month. The thread saw a clash between the “once-a-year” camp and the “once-a-week” camp, but rather than either side being simply wrong, it may just be that the right frequency depends on workplace dress culture, climate, and how easily a person sweats. The traditional British method of caring for wool garments (brushing off dust instead of washing) was brought up, but it’s worth noting that while this is a classic technique for making fibers last, it doesn’t necessarily translate directly to Japan’s hot, humid climate. Some generations apparently don’t even recognize the term “slacks” itself, which may reflect how remote work and the shift toward casual office attire have reduced everyday opportunities to wear formal trousers in the first place.

※This article is compiled from excerpts and a summary of the 5ch (Hello! Project board) thread “I told a coworker slacks are supposed to go to the dry cleaner every single day you wear them, and they were shocked lol.”

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