I'm not sure about pet food but with alot of other retail products stores basically have to agree that their products get a certain amount of attention. I.E. Things like Ralph Lauren are right next to the escalator as opposed to the corner of the store near no exits. Merchandising is a huge deal and I bet Iams and Purina at least sweeten the deal with retailers to get their products in the best spots.
__________________  Eleanor's Mommy |