受大家喜愛的食物或彩妝如紅酒、蕃茄醬、口紅等，是常見的頑強汙漬來源。但是現在您可以跟頑強汙漬說 goodbye ! 更多資訊請參照問與答。
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Wool generally should be dry cleaned. Always follow garment label instructions when pretreating and laundering your clothes. For colored garments, test an inside seam for colorfastness.
If the garment is washable, treat tar stains as quickly as possible. Use a dull knife to scrape excess tar from the fabric. Place the stain face down on clean paper towels. Sponge with dry-cleaning fluid, if available. Replace towels frequently for better absorption. Pretreat with wool compatible stain remover. Then wash with Perwoll Balsam Magic in the maximum temperature recommended on the garment label. If dry clean only, take it to the dry cleaner for stain removal.