When using a CamelBak (or other hydration bladder system), it is easy for mold to grow if the bladder is left sitting with water in it. What is the best way to avoid mold (or other nasties) growing inside in between trips?
CamelBak have a great answer in the help section of their website. Summarising their recommendations:
Keep it clean and dry when not in use. If mould develops:
- Use hot water and two tablespoons of baking soda or bleach
- Leave for about 30 minutes
- Wash with hot water and mild soap
- Air dry
This is why I like the pouches that have a zip-lock bottom as well as a cap on the top - it makes it a lot easier to clean the inside and leave it open to let it fully dry.
My friend also swore by leaving the pouch in the freezer when not in use - this would obviously slow down mould growth considerably in between uses.
I used a blow dryer on low setting to dry the bag and tub, and a paper towel pouch (twist tie close) with rice - I figure if it gets moisture out of a cell phone and salt - it ought to work for a Camelback. I also save the little silica gel packets that come in vitamin bottles and new shoe boxes and may try those.
I get food-grade 3% hydrogen peroxide (NOT 35%) from my health-food/ vitamin store and put a cap-ful in any water container then fill it to the brim. It works really well to kill microbes of all kinds by oxygenating the water, and you can drink it in that low of a concentration (it is used in commercial food preparation, and some people believe that drinking oxygenated water is actually good for you as well).
I use a reservoir dryer to hang my reservoir open and upside-down, and...
- Only ever fill with water
- Empty and dry every night, even if using it the next day
- After about half an hour of drying pinch the bite valve and shake to remove any extra water, and also shake the reservoir with the opening facing down to remove any water that has collected
- Pack it all away after about a day, or once things look nice and dry
I've been following this approach with the reservoir for the CamelBak I bought in 2005 is still going strong, with no mould or other nasties inside!