Pets instinctively chew & eat grass to obtain vitamins, minerals, and live enzymes provided by fresh, raw, whole foods. Unlike their undomesticated counterparts/relatives, pets typically do not have access to a ready supply of healthy greens such as Pet Grass. If your pets are indoor-only pets, Pet Grass gives them these vital nutrients they would otherwise miss, and may also prevent them from eating your houseplants. Dogs and cats that go outdoors will eat grass, but it has little if any nutritional value. Your yard may also have been treated with chemical fertilizers and pesticides, which could be harmful to your pets. Offering them Pet Grass is a safer, healthy alternative.