Clean with Compressed Air

• One way to clean your PS3's internal laser is to use a can of compressed air. This is highly pressurized air contained in a can with a thin nozzle on the end. It is designed to get dust and dirt out of small spaces. Cans of compressed air can be purchased at any major electronics retailer, such as Best Buy or Radio Shack. Point the can's nozzle toward the PS3's disc tray and lightly spray for a few seconds to remove loose dust from the lens.
  
  

Use a Laser Lens Cleaner Kit

• Also available are laser lens cleaning kits that work with the PlayStation 3. These kits contain a disc that is inserted in the PS3 the same way you would a video game or movie. The difference is that there is no data on the disc; it is designed specifically to spin in such a way that it gently cleans that PS3's laser lens, removing all dust, dirt and smudges in the process. These kits will also work on DVD, Blu-Ray and computer disc drives, in addition to the PS3.
  
  

Maintain the Discs

• One way to make sure your PS3 laser stays clean is to keep track of the discs themselves. Examine a disc before you put it into your PS3's disc tray. If there is any dust or dirt use a dry, soft cloth to gently remove them before play. Dust and dirt are easily transmitted to the PS3's laser lens as the disc spins around at high speeds in the tray. By keeping the discs clean, you can make sure you don't have to go out and spend extra money on cleaning your PS3 laser lens in the first place.