Why do Next Gen litters cost more than other litters?

They actually do not… When comparing the cost of cat litter it is important to understand the amount of litter used in a 4 or 6 week period.  The superior absorbency of Next Gen cat litter means that one 10 liter bag will last one cat up to 6 weeks with daily maintenance.  Consider how many bags of clay litter you would need for this same period of time.  Our research has concluded that one 10 liter bag of Next Gen litter is equal to 2 to 4 bags of other litters.