As a result of the potential animal and human health risks, some agencies assert that the risks inherent in raw feeding outweigh the purported benefits. Despite such concerns, there is no known incidence of humans being infected with "Salmonella" by cats and dogs fed a raw diet. There have been isolated cases of humans contracting "Salmonella" from household pets, but it is undetermined whether raw food was the cause. The FDA recommends cleaning and disinfecting all surfaces that come in contact with raw meat, as well as thorough hand washing to reduce the risk of infection.