First of all, we should buy cat food in formal channels, and avoid buying cat food in bulk, cheap and broken packages without miscellaneous brands. Don't be too superstitious about the brand and price when buying cat food, but don't buy domestic food, fake foreign goods or even three-no products for a few dollars a catty.
The second is to avoid mildew or pollution of cat food in storage. It is necessary to prevent insects, mildew, bacteria, moisture and dust.