Starting 9/1, Crest Pro Health Rinse 500 ml to 1 liter is on sale for $4.99 at Rite Aid
Use the $1 printable coupon to pay $3.99 at the register (print 2 coupons to get 2 offers)
You will get a $3 +UP Reward, so your net cost will be 99 cents each (80% savings). Limit 2 offers