Crest Scope Outlast Mouthwash, 1 L on Amazon as an add on item it has a $1.50 coupon clip.
https://www.amazon.com/gp/aw/d/B0…ref=plSrch
Saw a study comparing scope to 3 other mouthwashes including listerine, picking staph and bacillus as the measuring standard, and scope came in second while listerine came in 4th.
You can read about it here:
http://www.drbunn.com/files/thsol01.pdf