Why Does the Stainless Steel Food Bowl Change Color After a Short Period of Use?

The reason why the food bowl turns rainbow-colored is that the carbohydrates precipitated from the pet food dry and adhere to the food bowl, forming a carbonized passivation film layer. In this case, it is recommended to clean it with edible white vinegar or cola. The stainless steel food bowl is made of food-grade 304 material and can be used with confidence.