I either drink it all or I dump it and put fresh water in. What are the risks if I don’t wash it? It’s just me drinking out of it. I’m talking days and days like why ever wash it if it’s just me?
Edit: Clarified the amount of time without washing
In: 3181
Bacteria needs food. Water has no food (sugar, carbohydrates, protein, etc) in it. Its basically a desert for them. Sure, things CAN live in the desert, but unless they are accustomed to it, they will die.
This all goes out the window if you introduce sugar, juice, or enough backwash.
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