I am concerned about odor, tracking and health of cats. I have read that certain clumping litters are very dusty and can impact cats health.
Answer by Gary
I like Arm & Hammer with extra Arm & Hammer laid down first under the litter. I have one elderly male cat and change the litter box completely twice a week. I just got a self-cleaning litter box and after some experimentation have found the right amount of litter to optimize its use.