@cd318 - My wife insists I use CloSYS un-flavored ultra sensative rinse *(for at least 30 seconds) held in the mouth after brushing and flossing each night. I’m sure there’s others that will work, this is the one she’s been directed to.
She told me it’s a good anti-covid practice, and that Xylitol can be used in Covid 19 prevention.