Uncommon opinion but I found that "Oil Pulling" first thing each morning freshened my breath for the day, removed more bacteria, whitened my teeth after 2 weeks, and kept me from getting sick!
I use organic coconut oil. When I wake up, I take a spoon of coconut oil in my mouth and swirl it around for 20 minutes while I read/journal/shower/etc. Never swallow!! It's supposed to trap and pull all the bacteria that sits and acquires in your mouth as you sleep. If you swallow it's basically like swallowing a mouthful of icky waste that could get you sick.
After spitting it out, I brush my teeth with non fluoride toothpaste and they feel so smooth and look shiny and healthy!
The studies I've read on it claim to reduce and reverse gum disease, and so much more! If anything, it's a cheap, quick, diy addition to my normal hygiene routine. And I've found it works wonders!