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How can I clean the mouth of my water bladder? I've tried soap and water but these colorful spots won't leave. (Osprey hydraulics 2.5L) : r/CampingGear
![Amazon.com: Osprey Hydraulics 2L Backpack Water Reservoir with Bite Valve , Blue : Industrial & Scientific Amazon.com: Osprey Hydraulics 2L Backpack Water Reservoir with Bite Valve , Blue : Industrial & Scientific](https://m.media-amazon.com/images/S/aplus-media/vc/5564aee1-e4d1-4017-93c7-3eae577373ed.__CR0,0,450,450_PT0_SX300_V1___.jpg)
Amazon.com: Osprey Hydraulics 2L Backpack Water Reservoir with Bite Valve , Blue : Industrial & Scientific
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