Firefly mouthwash for $0.50 at Dollar Tree!! Dollar Tree Sale Dates: NOW through 11/30! Grab Firefly mouth rinse for just $0.50!! Here's How To Do This Deal: Buy: One (1) Firefly mouth rinse $1.00 Use: No Coupons Available Pay: $1.00 Get Back: Save $0.50 on Firefly Anti-Cavity Mouth Rinse (Ibotta Deposit)- Limit 5 Final Price: $0.50 each!! Check out the latest Dollar View Post