LISTERINE (orig types or fluoride only) Try for 21 Days, Not Happy? Get Money Back MIR up to $12.99 to 6/30/13

http://www.listerine.com/21days

2013 LISTERINE® Challenge
Money Back Guarantee
Terms, Conditions and Mechanics
Tell us why you don’t believe that you felt the difference in your mouth after rinsing with ANY LISTERINE® THERAPEUTIC MOUTHWASH* ( antiseptic or fluoride mouthwash) for 21 days, vs. prior to using LISTERINE® – (up to 50 words). Be sure to include your name and address, city, state, and zip code with your comment.
No P.O boxes, only street and rural route addresses are acceptable.
*Excludes LISTERINE® ZERO™
*Excludes LISTERINE® SMART RINSE® Anticavity Fluoride Rinse
Offer limited to sizes 250mL or larger for LISTERINE® THERAPEUTIC MOUTHWASH and 32 oz. for LISTERINE® Whitening Restoring Fluoride Whitening Rinse
Enclose your original store identified sales receipt dated 2/1/13 through 6/30/13 indicating eligible LISTERINE® product purchased with purchase price circled.
Enclose the original LISTERINE® Therapeutic Mouthwash (antiseptic or fluoride mouthwash) package UPC from the bottle.
Mail to: LISTERINE® CHALLENGE, P.O. Box 49160 Dept M, Strongsville, OH, 44149-0160.

Offer Terms valid for U.S. residents only. Purchase must be made 2/1/13 through 6/30/13 and received at the mailing address on or before 8/15/13. Offer is limited to one (1) reimbursement claim per household or street address for the purchase of a single product. No P.O. boxes. Maximum value of the reimbursement equals $12.99 USD, including tax. Participants will receive a refund check by mail.

Please allow 6-8 weeks for processing and delivery. If original UPC, valid original sales receipt (with retailer name, accurate product description and date) are not included in the request for a refund, the purchase price (up to $12.99) will not be refunded. Fraudulent submission including use of multiple addresses to obtain additional rebates may result in federal prosecution under the U.S. Mail Fraud Statutes (18 U.S. Code, Section 1342). Not responsible for lost, late or undelivered responses. Must be 18 or older to participate.
* Use a LISTERINE® therapeutic mouthwash as directed for 21 days. If you don’t feel a
difference, you will receive a full refund for your purchase. Offer valid until June 30, 2013.

Just got it back denied for "wrong receipt or UPC."
Be prepared for a fight.