Laundry advice gets passed down and very little of it gets checked. Some of it was true once and is not any more, some was never true, and a few of the things people dismiss as folklore actually work.
Here is what holds up.
More detergent cleans better
Wrong, and it is the most expensive mistake in the list.
Excess detergent does not rinse out, particularly in a high efficiency machine where there is little spare water. It stays in the fabric, holds odour, stiffens texture, and attracts dirt faster on the next wear. It also creates suds that cushion the rubbing action the machine relies on, so more detergent literally washes worse.
Roughly two tablespoons of HE liquid for a normal load. Most people use three or four times that.
Hot water cleans better than cold
Depends entirely on the soil.
Heat dissolves body oil, which cold water genuinely struggles with. So towels, bedding, socks, underwear, and anything worn while sweating do better warm.
But heat permanently sets protein stains. Blood, egg, dairy, and grass must be washed cold, and hot water cooks them into the fabric where nothing will get them out.
Modern detergents are also formulated to work in cold, which was not true twenty years ago. The blanket rule is what is wrong, not either temperature.
Fabric softener is good for your clothes
Wrong for most of what people put it on.
It works by depositing a waxy coating. That coating destroys towel absorbency, seals the fibers in activewear so moisture-wicking stops working and odour becomes permanent, coats the dryer lint screen and restricts airflow, and builds up in the machine’s dispenser.
It also reduces flame resistance on children’s sleepwear, which is why those labels tell you not to use it.
White vinegar in the rinse softens by removing residue rather than adding a coating.
Dry clean only always means dry clean only
Sometimes.
Manufacturers label conservatively to avoid complaints. Many “dry clean only” items in cotton, linen, or polyester hand wash perfectly well.
What genuinely needs it: structured tailoring where the interfacing would deform, anything with significant embellishment, leather and suede, and most silk where the dye is unstable.
If you are going to test it, test on an inside seam first, and accept the risk on anything you cannot replace.
Freezing jeans kills bacteria and freshens them
Wrong, and it is one of the most repeated pieces of laundry advice online.
Freezing makes bacteria dormant rather than killing them, and they recover at body temperature within hours. It also does nothing at all about body oil, which is the actual cause of the smell.
Airing jeans out works better and costs nothing. Washing them every five to ten wears, cold and inside out, is the real answer.
You should wash new clothes before wearing them
True, for a better reason than people give.
The usual justification is other people trying things on. The stronger reason is the finishing chemicals used in manufacturing, which are a recognised cause of contact dermatitis in sensitive people.
Also true for dark items specifically, which shed loose dye onto everything for the first several washes.
Bleach makes whites whiter
True at first and counterproductive over time.
Chlorine bleach can react with body oil residue and mineral deposits in fabric, and repeated use is a common cause of whites turning yellow rather than staying white. It also weakens fibers with every use, and degrades rubber machine parts.
Oxygen bleach is safe on colours, safe on the machine, and better for maintaining whites over the long run.
A vinegar rinse damages your machine
Half true and worth understanding.
Vinegar is an acid, and prolonged repeated exposure can degrade rubber seals and hoses. A vinegar cycle every week is genuinely not a good idea, and soaking parts in undiluted vinegar for hours is worse.
Monthly is fine, and half a cup in a rinse is fine. The scare version of this is overstated and the ignore-it-entirely version is also wrong.
Sunlight bleaches and ruins clothes
Both parts are true and it depends what you want.
Ultraviolet light does fade dyes and does degrade elastane, so dark and stretchy items should dry in shade.
It also kills surface growth and lifts organic staining, which makes it genuinely useful on white cotton, on mildew, and on turmeric and tomato stains that respond to nothing else.
Dryer sheets are harmless
Wrong, for the same reason as softener.
They are the same chemistry delivered dry. The film they leave on the lint screen is invisible and restricts airflow, which makes the dryer run longer and hotter, which wears clothes faster and is a real safety consideration.
Test yours: run water onto the screen. If it beads or pools instead of falling straight through, it is coated. Wool dryer balls do the anti-static and separation work without any of it.
The Pacific Northwest one
A local belief worth addressing: that line drying does not work here.
Mostly true from November to March, when outdoor air is often carrying more moisture than the fabric is and things simply do not dry. Indoors on a rack in a heated room works better in those months.
Not true from June to September, when the dry season here is genuinely dry and sun drying works as well as anywhere.
The related myth is that a damp climate means you should wash less often to avoid drying trouble. The opposite: damp conditions are exactly where fabric left unwashed and slightly moist develops problems fastest.
The one that is simply true
Leaving the washer door open between loads is the single most effective free thing anyone can do about machine smell. It is not folklore and it costs nothing.
The machines at our self-service laundry on NE Vancouver Mall Drive reach higher wash temperatures and move more water per cycle than most home units, which settles the hot-versus-cold argument for the loads where heat is genuinely the mechanism.
Our machines and the store are cleaned daily, and the door-open habit is part of that.
Our wash-dry-fold service covers everyday laundry when the week has gotten ahead of you.
The short version
More detergent washes worse, because suds cushion the action the machine cleans with. Hot water is right for body oil and wrong for protein stains, so the blanket rule is what fails. Fabric softener and dryer sheets coat fibers and are wrong for towels, activewear, and children’s sleepwear. Freezing jeans does nothing, since it does not touch body oil. Chlorine bleach turns whites yellow over time and oxygen bleach does not. Vinegar monthly is fine and weekly is not. Sunlight fades dye and also kills mildew, so it depends what you are drying. And leaving the washer door open is the one piece of common advice that is simply correct.
WaveMAX Vancouver is at 8109 NE Vancouver Mall Drive, easy to reach from Vancouver and the surrounding area. If a load needs more machine than you have at home, call us at 360-433-9864.