As reported in DVM news, a pet food manufacturer in Illinois must stop shipping due to manufacturing practices that FDA says could result in botulism food poisoning. This has been an ongoing dispute between Evangers and FDA.

http://veterinarynews.dvm360.com/dvm/Veterinary+news/FDA-halts-Illinois-pet-food-firms-shipments/ArticleStandard/Article/detail/604124?contextCategoryId=378

Also cited elsewhere, mentioning Evangers and Nutro:
l
http://www.consumeraffairs.com/news04/2009/06/fda_evangers02.html