FREE Animal Crackers @ Wal-mart

Here's a printable coupon for $2.00/2 Nabisco crackers.  Use these at Wal-mart on the small $1.00 boxes of Barnum Animal Crackers for TWO FREE boxes!!  I haven't tried this since I used my coupons last week at Walgreens for FREE Ritz crackers but I have read this on several money saving blogs.   I wish I had a couple of these coupons left since my son would really like some FREE animal crackers!!