The ultimate mouth care is Listerine, right?

I went to the dentist because my gums hurt, and they recommended this. Since I was in pain right now, I thought I'd give it a try, but

I definitely think there is a big difference between gargling and not rinsing. When I wake up, the dryness in my mouth and, especially, the scent of my breath, feel different.

Of course, I'm not saying you absolutely have to use Listerine. There are so many brands out there, so please make sure to use it before you go to bed. It feels refreshing and makes you feel like you've been reborn... hehe.