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
If you’re constantly rinsing and cycling through the bottle then it really is not a problem because there isn’t really a chance for a dangerous amount of bacteria to grow in it when it’s just water.
Now if you were drinking sugary drinks where the walls of the bottle end up coated in sugar, then you gotta clean it more
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