I spotted this Try Me Free product as I was looking at the dishwasher detergents. I have seen coupons for these before but you can use the $0.75/1 Dishwasher Magic Dishwasher Cleaner printable coupon and make this an awesome deal.
Buy 1 Dishwasher Magic $3.98
-Use $0.75/1 Dishwasher Magic printable coupon (Arrives via email)
Final Price: $3.23 (FREE After mail in Rebate)