Generally speaking, catnip should be fed once a week, with an amount of a thumb covering. Adult cats should not eat more than the size of their thumbnail at one time, and it is best to be careful not to use it frequently, no more than once a week, because feeding too much will make it difficult for the cat to breathe, and it will also develop immunity and lose interest in catnip.

Precautions for feeding catnip to cats:

1. Do not feed milk cats. Cats should be fed after they are 8 months old.

2. Pay attention to the appropriate amount of feeding and do not overfeed.

3. If there are multiple cats at home, it is best to isolate them when feeding to prevent them from getting excited and fighting after feeding.

4. Do not give catnip to pregnant cats to prevent the cat from being too excited and running and jumping, leading to miscarriage.