The wood pellets are treated with a process called kiln drying. This process causes a majority of phenol to evaporate, making wood pellets safe for cats
Wood pellet litter should be cleaned daily. Sift sawdust at least once a day and scoop solids as soon as possible after use. With a consistent cleaning routine, pellet litter should only need to be changed about once every four weeks.
Pellets are granules that are made from a variety of absorbent biodegradable materials, constituting an effective option as cat litter. Unlike the traditional fine-grain clumping clay litter, pellet litters have larger and coarser pieces
They're better for your cat's health, better for the environment, have natural antimicrobial properties, are relatively inexpensive, and make less mess.
The clumps is bio-degradable in water, it can be either burned or flushed down toilet, environmentally friendly.