According to a report in the Wall Street Journal, there is evidence the contamination is sickening pet owners.
The FDA suspects that the bacteria could be easily transferred to people who handle the food on a daily basis.
According to the report, FDA investigators started taking samples last month of dry pet food, treats and diet supplements many which are sold in national chain stores.
The CDC advises consumers to wash their hands after feeding pets and keep babies away from the dog's dish.
