I was just reading in another thread that keeping plastic bacteria-free is difficult. So that got me to thinking of all the old water bottles I have.
Do you guys put them in the dishwasher or just clean them by hand with soap and water?
I'd imagine the bacteria, if any, would from at the mouth area.........
Do you guys keep your water bottles forever or just buy a new one every couple of years or so?
Or have you never cleaned your bottle