There are many greedy cats who are only interested in meat and snacks. They are not so greedy as to eat plastic and cotton swabs. You can observe whether the cat's nose is a little white. Generally, a normal cat has a pink or black nose. After some cats get pica, their noses will turn white and lose a lot of hair. When cats have pica, their bodies will be abnormal and they are interested in some foreign objects. During this time, put away the plastic bags and cotton swabs that the cat is interested in to reduce the chance of eating them. If the cat finds that the plastic bag continues to eat, it should be educated and taken away in time. Cats get pica because there are too few trace elements in the cat food they usually eat. During this period, the cat should be fed some trace elements, and a proper amount of mineral essence should be added to the cat's diet, and then mixed and fed together. We should keep feeding for a period of time until the cat's body gets enough trace elements, and it will gradually get rid of the behavior of biting foreign bodies.