the rewards of being a concerned consumer

i wrote to Arm & Hammer recently to complain about their discontinuing their Super Stop clay litter, which was by far the best non-clumping litter on the market. (my boys dig too vigorously for clumping litter to hold together.) today i got a padded envelope from them containing the following inexplicable assortment of materials:

• a coupon for Arm & Hammer clumping cat litter
  
• a brochure about the latest Arm & Hammer toothpaste innovations
  
• a brochure detailing the various household uses of Arm & Hammer baking soda
  
• a brochure listing all of Arm & Hammer's household products
  
• a cd-rom version of the Joy of Cooking
  

ok, so i can understand the coupon. and the brochures, while not really related to my inquiry, make at least some sense. but, uh, the Joy of Cooking? what the hell does that have to do with discontinued cat litter?

i mean, not that i'm complaining. it's the latest edition, whereas my copy dates to the 1950s and is falling apart; always nice to have both versions. but, you know... um. whatEVER.