That’s because reusable water bottles can become a hive for microbes ... moisture can accumulate — these areas can be hot spots for mold growth if not properly cleaned and dried.

"Mold spores, which are ubiquitous in the environment ... For best and cleanest results, follow the steps below: Use hot, soapy water to scrub the interior and exterior of the water bottle. Including ...

Rinse again with hot water. Air-dry the bottle completely. Dampness can trigger the growth of bacteria and mold, so allow the ...