$10.50 of Arm & Hammer Cat Litter CouponsApril 9, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Here’s another great coupon offer! Go here and enter your email address to get $10.50 in coupons for Arm & Hammer Clumping Cat Litter. I’m assuming they will send you the coupons via email.