Hold straw end of Compressed Air Can aprox ½ inch from opening of the game cartridge. Spray air into the opening, be sure to get the center and the corners.
TIP: Do not put the straw directly into the cartridge opening. Compressed air cans contains tetrafluoroethane, a ozone safe chemical that is also used as a refrigerant. When it first comes out of the can it is very cold and could damage the cartridge. Holding the straw end ½ inch away from the opening should allow the air temperature to level enough not to cause any damage.
This may be the only step you need to take. Test the game out and see. If you still have problems proceed to the next step.

