The clumping litter that permanently traps and absorbs odors. Cat's Best Original uses the power of refined active wood fibers to effectively absorb liquids and odors, locking them deep inside – up to seven times its own weight. This neutralizes odors so effectively that the cat litter can remain in the litter box for up to seven weeks. Cat's Best Original works best when you regularly dispose of the solid waste and clumps that form after using the litter box – using an original Cat's Best litter scoop, which has the perfect hole spacing for the grain size. This saves time and costs while providing the kind of hygiene and comfort that cats prefer. Cat's Best Original is made exclusively from renewable raw materials, making it both sustainable and biodegradable.