The above answers are misleading. You can in-fact damage the Blue-Ray laser when attempting to force it to read a dirty/damaged disc. However, if they are just small, unnoticeable scratches, I'm sure you have nothing to worry about. Also, always look at the back side of a disc before inserting it into the system, because, in full potential, a dirty/damaged disc could permanently harm your device's laser. Over time, after the laser has endured several minor scratches, you may however require a replacement. But this is due to years of minor scratches, so don't hesitate to place a slightly scratched disc into the system.