Don't wipe your laser lens with a cotton swab!!! Instead go out and purchase a DVD Laser lens cleaning disk and use that.
Jan, July 2007
My portable dvd player kept giving the message "wrong disc". How I fixed it was to clean the laser lense. Dip a cotton bud in a little alcohol (we used Stolichnaya vodka) and gently (v. gently!) clean the laser lense.