There is a new Buy 1 Get 1 Free Purex coupon on Coupons.com! Only select regions get this coupon. You must put in your zip code in the screen that pops up to see if you have access to the coupon! If you are one of the lucky ones to get the coupon, be sure to print it twice!
CVS has Purex Detergent on sale B1G1Free this week (through 4/18). Use the B1G1Free coupon to get 2 Free! You will purchase two and one will ring up free, then the coupon will take off the amount of the non-free detergent which should bring your total to $0 for 2 detergents!