FDA Blocks Nutro Pet Food Shipment from Entering U.S. Products "appeared to contain poisonous substances and unsafe additives" By Lisa Wade McCormick ConsumerAffairs.Com August 28, 2007 The Food and Drug Administration (FDA) in July blocked more than 100 Nutro Products -- various styles and flavors of its dog and cat food -- from entering the United States. ConsumerAffairs.com learned the FDA took that action at the Port of Los Angeles -- and listed Nutro’s pet food on its Import Refusal Report -- because the products appeared to contain poisonous substances and unsafe additives. The FDA has authority to block and...