The SmartyKat Sweet Greens Cat Grass Seed Kit is an easy way to give your kitty a natural grass treat. This all-in-one kit comes with organic oat seeds and just the right amount of potting soil. The only thing you have to do is add water, and in a few days, the seeds will start to sprout. Soon, you’ll have full patch of delicious sweet greens for your cat to nibble and bite. Grass not only provides roughage but also contains vitamins, minerals and chlorophyll, a natural breath freshener.