LISTERINE® 21-DAY CHALLENGE

Frequently Asked Questions

While the Official Rules outline the complete details of this promotion, your question may already be answered below.

Q. What are the prizes for this promotion?
A. Grand Prize:
  • $10,000 check


    Instant Win Prizes:
  • $100 Visa® Prepaid Cards
  • $50 Visa Prepaid Cards
  • $20 Visa Prepaid Cards


See the Official Rules for complete details.
Q. How do I play the instant win game?
A. Use your finger or mouse to brush away the germs before the timer runs out. Then, you'll be able to see if you're a winner.

Note: game results do not impact chances of winning.
Q. How many prizes could I win?
A. There is a limit of one sweepstakes and one instant win prize per person.
Q. I won the instant win game, but never received an email with more details. What should I do?
A. Please search your inbox, including your spam folder, for an email from customercare@helloworldfulfillment.com. If you still cannot find the email, please fill out the contact form to let us know so that we can assist.
Q. I uploaded my swishin' selfie photo, but do not see my bonus entries counted. What happened?
A. Try refreshing the page. If you're still not seeing your entries counted, please contact us.
Q. I uploaded my swishin' selfie photo, but never saw my photo available to share. What happened?
A. Our team needs to verify each selfie submission to ensure the requirements were met. This may take a couple of days. If your selfie is verified, you'll see your photo available for sharing in a couple of days.
Q. How will I know if I'm the big sweepstakes winner?
A. The grand prize drawing will be held on or around March 11, 2020. The winner will be notified via email from the contact information provided upon registration. Once the winners are confirmed and prizes are fulfilled, an official win list will be posted. A direct link to this list can be found in the Official Rules.
Q. I got a message that I've already entered today, but I haven't. What should I do?
A. Make sure you are visiting https://www.listerine21daychallenge.com/ directly rather than a bookmarked page in your browser. Also, please try to clear cookies and cache on your internet browser.
Q. I think I'm having technical issues. What should I do?
A. Sometimes it's a simple thing like updating your browser. Check to be sure that you have a modern version of Chrome, Internet Explorer, Firefox, or Safari. Also, you may want to check your browser preferences section to be sure JavaScript is enabled. Clearing your cache and cookies also helps in this instance.
Q. I sent in my receipt, but do not see my bonus entries counted. What happened?
A. Our team needs to verify receipt submission to ensure the requirements were met. This may take a couple of days. If your receipt is verified, you'll see the entries added to your sweepstakes counter.
Q. I have recently moved or updated my email address. Can I change my registration information for this promotion?
A. We apologize for any inconvenience, but due to the number of entries we receive in each promotion, we are unable to change registration information. If you do win a prize during the promotional period and your contact information does change, contact customercare@helloworldfulfillment.com and provide your updated information.

Please Note: We cannot guarantee that we will be able to accommodate your request.

The Visa® Prepaid Card is issued by The Bancorp Bank, Member FDIC, pursuant to a license from Visa U.S.A. Inc. Use your Visa Prepaid Card anywhere Visa debit cards are accepted in the United States and U.S. Territories. The card may not be used at any merchant, including internet and mail or telephone order merchants, outside of the United States and U.S. Territories.