Monday MIRs are brought to you by Christina from Northern Cheapskate. Her passion is helping people take control of their finances through coupon-clipping, freebie-finding and frugal living strategies. Arm & Hammer. Get a FREE 20-lb. package of Arm & Hammer Ultra Last Baking Soda Coated Clumping Cat Litter after mail-in rebate (up to $8.99).  Offer [...]