Thank you for your help. I have tried rocks in some of my larger pots, but they seem to like the little ones as well. Your help will be greatly appreciated. The plants themselves, as well as the potting soil, are irresistible attractions for bored cats. Some house plants are toxic to cats, so make sure you have only non-toxic varieties within the reach of your pets.
Cats really seem to love to get their toes into soil.
You can enhance the effectiveness of your rock mulch by first cutting a circle of screen wire or weed fabric the same diameter as your pot. Then cover the screen barrier with rock, crushed marble, or pea gravel. This is a pretty effective barrier for digging, but it may not curb destruction of plant materials. There are several spray repellant products available to keep cats away from plants and other items. Pet stores will have a selection of these products or check with your personal veterinarian for a specific recommendation.