If your cat does not go outside providing a source of cat grass is useful to make sure they consume enough fibre the catit senses 20 grass kit helps you grow your own cat grass in just a few days grass is one of the most natural sources of dietary fibre for cats and can help to boost their digestion and reduce hairballs grass is healthy and perfect for your cat to eat unlike houseplants which can be poisonous for pets the catit senses 20 grass kit contains 3 packs of seeds plus 3 packs