Question: clean old yellowed toys
Option 0: Start by moistening the plastic pieces.    Place some Comet cleaner on your hand and start scrubbing.    This requires plenty of elbow grease and time, but will take the yellow out with some scrubbing.    When the yellow is removed, wash the piece in water and dish detergent.
Option 1: Start by moistening the plastic pieces.    Place some Comet cleaner on the scrubbing sponge and start scrubbing.    This requires plenty of elbow grease and time, but will take the yellow out with some scrubbing.    When the yellow is removed, wash the piece in water and dish detergent.
Answer: 1