Light but Mighty Philosophy: We believe you should experience Lightweight litter without compromising on performance. Boxiecat Air litter is light on what you don't want but mighty on what you need. Airtight clumps lock in odors, scoop easily, and don't stick. Enjoy a super clean litter box while saying goodbye to weight, odors, and dust. Air is plant-based, renewable, sustainable, USA sourced, and made without clay. About This Formula: Boxiecat's probiotics stop odors before they start, immediately targeting odors anytime waste is present. Boxiecat's flat top clumps also trap ammonia odors so they can't escape. As an added bonus, Boxiecat extra strength inhibits increased litter box odors due to rich protein diets.