KONG's new Scratch Apple cat toy combines the fun and action of a catnip toy with the irresistible feel of corrugate scratchers cats love. Cats won’t be able to resist this apple. KONG Scratch Apple has a unique scratching surface with plenty of ridges and grooves, and easily rolls along the floor. Complete with a twist-off top and a hollow core to hold catnip, this new product is sure to have cats enthralled for hours. Simply twist off top to fill toy with fresh catnip.