I just need to know how to erase tapes (audio) with a realistic tape eraser cat. no. 44-233A???

1. Plug into a standard 110-120V AC power outlet.
2. Select a tape [or similar small object]...
3. Hold the eraser in your hand and squeeze the trigger. The red light indicates that the unit is operating.
4. While squeezing the trigger, place the bottom of the eraser in contact with the item to be erased. Move the eraser slowly in a circular motion over the entire product area but do not release the trigger yet.
Make circular passes arount the tape for approximately 10-20 seconds, then slowly withdraw the eraser until it is about three feet away from the tape. Now release the trigger.
5. Turn the cassette or diskette over and repeat steps 3 and 4.