coupons.com (and use zip 90210 if necessary) to print out $1.00 off any Reach floss item. This means free dental floss at Wal-mart and possibly CVS, Walgreens or Target when paired with a sale.
Also keep your eye out for some other great coupons:
.75 off Philadelphia Cooking Creme
1.00 off Listerine
1.00 off kid's Listerine and toothbrush