This litter will block ammonia (OdourLock technology activates on contact with urine to neutralize odours), has no tracking, and is extra-hard clumping. Comforting & reminiscent of the neutral scent of talcum powder, the baby powder fragrance will leave a clean scent around your litter box & the scent is only activated by contact with moisture. It is dust free & safe to use, ideal for owners of cat with asthma or dust allergies.