Cats are divas, and they will always complain if there are abrupt changes in their routine. For example, bringing them to a pet groomer can cause stress. If they don't know the place and it's packed with other animals, they may feel uncomfortable and anxious. At the same time, their guards are always up since they don't know if they are being threatened.
So if you want to make sure that your cats won't feel stressed, a mobile cat groomer will be the right choice. They will come to your home, and they can do the grooming inside your house. Your cats will feel safe since they're in a familiar place.