All my life, I had wet my toothbrush twice. Once before I applied any toothpaste, and once afterwards. I’d continue this for a while, until sometime in college. I had a roommate from California who only wet his toothbrush one time.
He’d wet his toothbrush, apply the paste, and brush away. I never really asked him about it, but quietly I started to understand. California has droughts and wildfires. It’s likely that most households in the area have some form of a water limit. So naturally, my roommate would be inclined to use less water.
Ultimately, wetting the toothbrush one time is plenty to get the bristles softened. And most people’s mouths are already pretty wet to begin with. So now I wet my toothbrush once. I can say that the experience is no different.
Did you know that each time you brush your teeth, if you leave the water running, you waste 4 gallons on average per session?
Spilled Milk 
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