Next Gen International Timber Fresh Cat Litter Made from Hinoki Cypress Wood 6 lb Bags.Timber Fresh is a natural cat litter made from Cypress (Hinoki) wood. Hinoki cypress wood is well know for suppressing the growth of bacteria and in the litter box this is how we control unwanted smells. Timber Fresh has a pleasant natural forest scent and it is a clumping litter. Don t let the light weight of our litter fool you - one 6 lb. bag of Timber Fresh will last one cat for 4 weeks or more. Compare that to the 50 or 60 lbs. of clay litter you may use in that same one month period of time !