The way that I clean my tube on trail and at home is to pull some cotton thru it. Here’s how I do it : First I take my dental floss and cut off a piece plently long enough to go thru the tube and then plus a good amount more. Then I remove the tube from the blatter, and remove the bite valve. Then I “suck” the dental floss through the tube, basically feeding the dental floss in through one end as I suck hard on the other. This works best when the tube is dry(er). Once I have the floss threaded through the tube, I tie the floss around part of a cotton ball (we don’t actually carry these hiking. I won’t tell you want I do use, but it belongs to my wife’s toiletry kit ;). Tie it at the center of the blob of cotton. Then pulls the floss back through the tube, dragging the cotton behind. This will pull all the nasty black stuff out. You will be amazed at how NASTY it is. Even a tube that looks clean. This is the “biofilm” that people talk about that resists treatment. Do this until you don’t get any nasty black stuff on the cotton after pulling it through.
I use q-tips to clean out the inside of the bite valve.
Bleach leaves the blatter tasting nasty. We did that with one of ours and even after years of use it still tastes like bleach.
Yes, sugar drinks make it much worse. We use our blatters for water and an old gatorade bottle for sugar drinks with our MSR blatters. We find the MSR blatters absorb oders really fast, and hold them for EVER! Our camelbaks seem not to absorb the oder. Never used them on a long distance hike though.
Gravity Man
Gravity Man