In response to a lawsuit alleging Nestle Purina PetCare's Beneful brand dog food caused illness in pets, Sens. Dianne Feinstein, D-Calif., and Dick Durbin, D-Ill., wrote a letter to FDA Commissioner Margaret Hamburg questioning whether the agency has done all it should have to ensure pet food safety. The senators questioned whether pet-food-safety provisions passed in 2007 have been implemented. Regarding the Beneful case, they criticized what they characterized as inaction on the part of regulators. Nestle Purina PetCare representatives have said the allegations are baseless and the food is not harmful for pets.