Pet Supplies Plus has Tidy Cats Cat Litter on sale for $2/6. Combine with a printable coupon for $3 off Tidy Cats 20 lbs or larger. Print 2 coupons and you will get 2 Tidy Cats for FREE! GO HERE to find a location near you, they are found mostly in the Eastern U.S but for us MN's, we can find stores in Bloomington and Burnsville.
The coupon does day PetsMart Coupon but the word on the street is that Pet Supplies Plus does take competitor coupons.
Thanks Mojosavings!