You can either hold onto your CVS Arm & Hammer detergent rainchecks for the rest of your life or toss ’em into recycling and head over to Walgreens which has the same $1.99 sale, but – surprise! – they have inventory!  Buy either packs or liquid detergent and use the $1 coupons in 5/7 SS or this $1 Arm & Hammer liquid coupon or this $1 Arm & Hammer Sensitive Skin liquid detergent coupon or this $1 Arm & Hammer single dose pack coupon or you can buy Xtra for the same $1.99 and use this $1 Xtra detergent coupon.