Hydration Bladder Care Tip #2: Get Rid of the Funk
The best thing I’ve found to de-funk hydration system bladders, like Camelbaks, is to drop in a several denture cleaning tablets. Even name-brand Efferdent is cheaper and more effective than the cleaning tabs sold by most camping gear shops.
Remember to open the hose valve or to not to seal the bladder completely, since the bubbles from the tablets could burst the bladder otherwise.
Now that your Camelbak bladder is clean keep the funk from coming back with tip #1.