The cleaning process is simple, and it is safe for cassette players.
Step one, use a paper clip to pierce the cleaning solution.
Step two, drop the cleaning liquid(about 3-4 drops) on the cleaning cassette head.
Step three, put the cleaning cassette into the player. Let it run automatically 1-2 minutes.
Tips: When finish the cleaning, take out the cassette and store it together with the cleaning solution in a cool and dry place for next use.