Through October 13th, Walgreens, CVS, and Rite Aid all have Purex Laundry Detergent on sale for $1.99. Use that $1/1 printable coupon to make it just $.99:
Buy 1 Purex Laundry Detergent 50oz – $1.99 (Ends 10/13)
Use this $1/1 Digital Coupon
Final Cost: Just $.99!