Whole Foods market, www.petfooddirect.com, Especially For Pets (chain store around here)...also, if you want to feed raw, you can check www.bravorawdiet.com for availability in your area.
PETA has done so much to discredit themselves in recent years-it's really a shame. Whether the story is true or not-how many concerned citizens will believe them in light of some of some of their more extreme shenanigans? (didn't click the link as I'm not sure I wanted to see.)
But, these allegations aside, wasn't IAMS sold a couple of years ago? Once that happened the product seemed to go downhill (from our own personal observations here with our kitty-bloating, cranky-ugh-I won't go into it!). Whole Foods brand all the way now.