The answer is ‘yes’. Plastic is porous, and its structure allows the buildup of bacteria much faster than ceramic bowls. While both types must be cleaned regularly if you don’t want your pet to end up getting sick from spoiled food, it is important to remember that plastic may not wash that well. It can also retain smell, which is a turn off for your cat.Ceramic bowls are the most recommended by vets and pet owners alike. They are easy to clean, they don’t trigger any allergies in cats, and they are also durable. All in all, they are a superior alternative to plastic bowls.