To disinfect pet food and water bowls, start by removing any leftover food or debris. Wash the bowls with warm, soapy water using a sponge or brush specifically designated for pet use. Rinse the bowls thoroughly to remove all soap residue. For disinfection, you can use a solution of one part water to one part white vinegar or a pet-safe disinfectant. Let the bowls sit in the solution for a few minutes, then rinse them thoroughly. Ensure the bowls are completely dry before refilling them with food or water.