The W225 is our most popular series, it is suitable for cats of all ages and comes in a wide range of fragrances, along with unscented too.Our BEST seller, ideal for all cats. The W225 is our most popular series, it is suitable for cats of all ages and comes in a wide range of fragrances, along with unscented too. High odour control 280% – 300% absorption capacity 0.6 – 2.25 mm Granular Size Range