FREE World’s Best Cat Litter! June 10, 2013 by Jamie Leave a Comment Tweet Right now you can score some FREE World’s Best cat Litter! Here’s how: Print this $2/1 Coupon to purchase World’s Best Cat Litter Then send in for the FREE Product Offer Rebate! (Good on 6, 7, or 8 Lb Bag) (makes it FREE!) - Thanks, PetCouponSavings!