Whiffle Balls Whiffle Balls Large Treat Ball Softball sized treat stash! $4.00 In Which Color: [Choose]RedOrangeYellowGreenBluePurple Quantity: at $4.00 each 10 in stock. These softball sized whiffle balls are perfect for stashing small treats in. Fill with your fuzzy's favorite treats & watch the fun begin! Available in assorted colors.