In every garage, toolbox, or "everything drawer," there's that legendary blue-and-yellow canister that most people know as the savior of squeaky hinges. But few know that WD-40 is also an incredibly effective cleaning agent—almost as versatile as that friend who knows everything from assembling a cabinet to fixing your WiFi.
Originally designed to protect rockets from rust (seriously), WD-40 found its true glory when it was used in the household as well – and not just for “manly things”. Today, it’s becoming part of the arsenal of modern households who want to simply, quickly and effectively remove the most stubborn stains, grease, glue, limescale and even crayons from children’s artwork. And all without having to carry ten different cleaners that take up an entire cabinet.
How (and where) does WD-40 actually work?
WD-40 is not a classic cleaner, but penetrant – a product that penetrates into microscopic gaps and breaks down the bonds between materials (such as rust, dirt, glue or oxidation). In addition, it leaves behind a protective layer that prevents dirt from quickly accumulating again. This means that it has a double effect: cleans and protects.
But be careful – due to its chemical composition not suitable for all surfacesTherefore, always do a spot test (test on an inconspicuous area), especially on wood, varnished surfaces or fabrics.
Kitchen: Goodbye, grease stains and fingerprints
WD-40 is great at cleaning stainless steel – refrigerators, ovens, hoods, handles... After cleaning, it leaves a shine and a protective layer that helps prevent the formation of new stains.
Usage: Spray WD-40 onto a soft cloth and gently wipe the surface. Do not spray directly – this reduces the chance of overspray. Never use on surfaces that come into contact with food. (cutting boards, inside of microwave ovens, etc.).
Bathroom: Stop limescale and soap scum
Shower heads, faucets, glass enclosures – all of these get coated with mineral deposits from hard water over the years. WD-40 dissolves them faster than most specialty products. It’s also great for cleaning limescale, rust and soap residue.
Usage: On shower head spray, leave for a few minutes and wipe with a soft cloth. Toilet bowl: spray WD-40 on the inside of the shell, wait 5 minutes, scrub with a brush. Watch the floor. – never use the product on smooth, ceramic surfaces as they become as slippery as a curling arena.
Living Room: Children, Crayons, and Other Aesthetic Disasters
Walls, furniture, switches, frames – WD-40 removes shoe prints, fingerprints, crayons and even glue from adhesive tapes or stickers.
Usage: Spray WD-40 on a cloth and wipe. the wallIf the wall is delicately painted, test on a small area first. Furniture: WD-40 can remove sticky stains (e.g. from juice), but be careful - it can leave marks on natural wood or varnished surfaces.
Bedroom: Minimalist action – maximum impact
Although WD-40 is not for textiles (read: NOT on bedding, pillows, or couches), it is still useful.
Mirrors and frames: removes sticker residue, prices or dirt. Parquet and laminate: excellent for removal shoe lines and rubbing furniture on the floor. Spray onto a cloth, wipe gently, then wipe immediately with a dry cloth.
Where NO use WD-40 (to avoid a mini disaster)
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- Surfaces that come into contact with food (including children's teething toys).
- Textiles and upholstered furniture.
- Varnished or sensitive wooden surfaces – don't risk it without a preliminary test.
- Bathroom floor – risk of slipping!
WD-40 – the ultimate household multitasker you've been ignoring
If cleaning products had their own Marvel franchise, WD-40 would be that quietly deadly anti-hero who saves the day without fanfare. It's effective, affordable, versatile, and incredibly easy to use—you just have to use it right. If you've only been using it for doors, it's time to expand its portfolio. And your home will thank you.
