“The silica box is a classic, my mom uses this box for her cats. However, we find that since there is less surface area compared to the fine-grain silica, it might get smellier quicker. We are going to go back to the fine-grain silica box, which is a five star litter in my opinion. Small enough to feel like sand for the cat, but it is non-clumping and reduces the scent by a lot! Not to mention our cat (for some reason) likes to chew on the large silica particles.”