Mold stains should be treated as quickly as possible, because mold spores can penetrate deep into the fabric, leaving both odor and discoloration.

First, take the garment outdoors and brush off the dry mold – this prevents spores from spreading inside the home. Then soak the garment in vinegar water (1 part vinegar, 2 parts water) or in a warm solution of sodium percarbonate (oxygen-based bleach). Leave it for 1–2 hours, then wash the garment at the highest temperature safe for the fabric.

Drying the garment in direct sunlight helps further kill mold and remove odors. For stubborn stains, the process can be repeated.