In general, Ceramic or metal food dishes bowl is the best choice for breeding. Plastic bowl is more easily to get scratches which is a good place to generate and attach baterias and other pathogens. This increases the chance for your cat to get sick. And these scratches are harder to clean than you think, even regular cleaning and disinfection will not guarantee your cat’s health. So the ideal material for cats’ dishes is food grade ceramic or metal(stainless steel is the best).