If I'm not mistaken, this issue was discussed in the thread "Iams,a recipe for Cruelty" under the Hall of Shame segment:
http://forums.petfinder.my/showthrea...7199#post17199
Many petshops in US & Canada have boycotted Iams products to pressure the company to improve conditions of the abused pets. Ultimately the decision is up to you, but you too can play a part to stop this cruelty.
Not sure of the latest update though. Anybody with updates, please do share.