For example, if your Camelbak bladder holds 2 liters (8. 45 cups) of water, then mix ½ cup (118. 3 ml) of baking soda with 1 ½ cups (354. 8 ml) of water. You may also add ¼ cup (59. 15 ml) of white vinegar to the solution. If you do, the vinegar will react with the baking soda, making the solution fizz. Wait until the solution stops fizzing before pouring it into the bladder.

If you added vinegar, open the main valve (away from your face) to let any built-up pressure escape.

Make sure the hose is facing away from your face when squeezing the bite valve.

You can buy scrub brushes from your local hardware store, or you can purchase the Camelback Cleaning Kit which includes brushes.

Use a Q-tip or another object to prop the bladder open so it can dry completely.

You can purchase hydraulic cleaning tablets online. Alternatively, you can use denture tablets instead of the hydraulic cleaning tablets.

Shake the bladder for 30 seconds and then pour out the solution.

Scrub both the tube and bladder until any and all residue is gone.

You may need to insert a wand-like object into the bladder’s entrance to keep it propped open so it can dry thoroughly.

The bladder may still have some mold stains after cleaning and scrubbing it. This is normal and the bladder should still be safe to use as long as you have cleaned it thoroughly.