Just found a post that says that giving a bath (or maybe just swabbing the nostril) with dandruff shampoo will remove the crusty stuff. Doesn't kill the fungus (Favus) but it cleans off the chalky stuff so the meds can work better... http://www.browneggblueegg.com/Article.html Scroll down on the left to "Favus" and then it's at the bottom of the page.