I use Listerine mouthwash.

At some point, I started having bad breath when I woke up in the morning. I wonder what happened inside my mouth while I was sleeping? That is why I guess I should drink a glass of water on an empty stomach after waking up, but only after brushing my teeth. I use Listerine, a reliable and long-loved mouthwash known for its antibacterial properties and frequent advertising. I feel truly refreshed only when I gargle with Listerine after brushing, and it actually does feel invigorating. It says "6-in-1," claiming to address six oral health concerns at once. Its main ingredient is eucalyptus.