Semen stain in my husband's underwear, I'm at a loss? - guyQ by AskMen
Will this work on dried semen stains? That's what you're looking for is dried stains and once the semen is dried on the material that's exactly where it will remain, locked into the fibers of the garment until the next time the item is laundered in a washing machine. How old can the suspected stain be? Dried semen is a very resilient substance that can live on as testable evidence for years when stored at normal room temperature. However, in the vast majority of cases you'll more than likely be testing items that were probably recently stained anyway. So, when we're talking about testing for semen stains in a relationship setting the age of the stain is really not even a factor to consider or worry about. W hat does a dried semen stain look like?