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if it is opened, no more than about 24 hrs, after that, the bacteria from your mouth begins to culture in it and if you drink it you can get sick
if it is unopened, for over a year
do NOT reuse water bottles without washing them with soap every other day at least, otherwise, you will be drinking lots of bacteria and will make yourself ill
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∙ 14y ago
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How long can car sit before you buy them?
67
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what happens to things that sit in water for a long time?
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