Mary wants to know more about dealing with washable and air-erasable markers. Ami Simms has the answers. I found the blue washable marker did not fully remove when I brushed the marks with cold water. There were rings around the area where the pen was used. I had to wash the article completely in cold water to get the rings out. Any idea why? And what about the air-erasable pens? Are they safe to use, or do they leave behind a residue that can come back to haunt one? Yes, it's sometimes true that the blue markings don't come out