Except one day when using your Camelbak, you might notice some funk in the middle of the tube.
It turns out funk is hard to photograph.
But I digress.
The funk made me think twice about that Cleaning Kit (the fact that I still had a credit at backcountry.com, and that they were offering free 2-day shipping for 4th of July weekend didn't hurt either).
The mouthpiece detached from the tube easily. Once I got past the hard part (pulling the tube off of the "bladder"... needed the man of the house to do that for me. Or, I just loosened it up for him. Either way) --the cleaning part was quite easy.
But also quite disgusting.
The above funk was obtained from the "delivery tube." I ran hot water through both ends of the tube first, before swabbing it with the brush. I stuck the brush in from both ends several times, washing the brush off in between, until the brush was finally clean when I pulled it out of the tube.
Ta Da! A clean delivery tube.
(That's just water inside).
And that, my friends, is why you should clean your Camelbak.
(I used the larger brush to scrub out the bladder/reservoir but I think I have done a good job of opening it and allowing it to air dry in between uses and therefore did not produce any gross-ness from that cleaning).