You can try Arm & Hammer Feline Pine Cat Litter for FREE with their mail-in rebate offer (save up to $18.99)! Highly absorbent pine fibers work like thousands of tiny sponges to soak up liquid and lock away ammonia odors, so kitty’s litter box stays fresh and dry. Highly absorbent pine and cedar fibers instantly absorb wet particles and form firm and solid clumps for easy removal. Rebate offer is valid on the purchase of one ARM & HAMMER Feline Pine Litter or ARM & HAMMER Feline Pine+Cedar Litter. Valid on purchases through 03/31/19. Rebate must be submitted before 04/30/19. Allow 6-8 weeks for processing. Available only in the U.S.A.