Guides
The background knowledge behind every stain plan. Like everything on this site, guides only contain claims with a stated origin.
How to read care labels
What the FTC Care Labeling Rule requires, and what every washtub, triangle, square, iron, and circle symbol means.
Cleaning product safety
The never-mix rules, ventilation, storage, and what to do after an exposure — from poison-control and public-health sources.
Spot-testing before you treat
Nearly every reliable source starts with the same instruction: test the cleaner on a hidden area first. Here is how they say to do it.
Blotting vs. rubbing
Why every carpet, stone, wool, and leather source says to blot a spill — and what rubbing or wiping does instead.
Heat sets stains
Hot water, the dryer, the iron, and steam can all make a removable stain permanent. What the sources actually say, stain by stain.
Enzyme cleaners and presoaks
Where the sources actually recommend enzyme products, how they say to use them, and the two hard restrictions.
Oxygen vs. chlorine bleach
When each bleach is safe, when chlorine bleach makes things permanently worse, and where our sources disagree.
Unknown stains: a safe first response
What to do when you don't know what the stain is — and why the wrong chemical or temperature can set it for good.
When to call a professional
The situations where our sources stop giving instructions and say to hand the item to a specialist cleaner or conservator.