See if you can score this deal at your local Walgreens on Crest Pro-Health Rinse.  There are reports that Crest Pro-Health Rinse is on clearance for $2.50 at some stores.  Checkout how to get it for Free:

Crest Pro-Health Rinse 1 lt on clearance for $2.50
$2.00/1 – Crest Rinse 946 ml or larger, Any from PG 12/26 exp 1/31
$2.00/1 – Crest Pro-Health Mouthwash, 1 lt – Walgreens Jan Booklet
Final Price:  Free

Thanks, Wild for Wags