Depending on how often you clean your reusable water bottle, it can harbor over 900,000 CFUs per square centimeter. What’s a CFU? It’s a colony forming unit, meaning it’s living bacteria that’s ready to multiply under the right conditions. Here’s a point of comparison: Are you a pet owner? That’s almost 20 times as many germs found on your furry friend’s water bowl! Would you drink from that?
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