I'm notoriously bad about keeping my bottles clean...usually go weeks between washing them, so take this with a train of salt, but vinegar was the first thing that pooed into my mind, too. Safe to ingest and used regularly and successfully to clean lots of other things...

I'll second the StarSan. We homebrewers depend on it to sanitize everything. The brew process converts the grain starch to fermentable sugar, and this sugar is basically microbe food. If you put the wort (boiled grain sugar) into anything that isn't sanitized you get infected beer in no time flat. Everything that touches it once you've turned that burner off needs to be sanitized. It is also no rinse, so you take your equipment out of the bucket and use it, and I usually insert my hands in it too so they are sanitized, even though my hands shouldn't be touching the beer. It also somehow acts as yeast food, so that is also a benefit for brewers. We soak clean bottles in it, empty them, and fill them without rinsing so there's always a tiny bit of starsan in every bottle.

I've actually used it to sanitize my bike bottles after they've sat all winter, although I don't do it on a regular basis.

It also kills ants.

For brewers, the only things used are StarSan, Iodophor, bleach and boiling. None of the other things I've read in this thread would be sufficient, and most homebrewers stopped using bleach because the chlorine will leave a taste.

hmm. Not to get side tracked, but this sounds interesting. I might look into home brewing as another hobby.

It isn't as hard as you may think, just a little time consuming. I think you have Northern Brewer up your way too. They're probably the largest homebrew store on the planet.

Curious what if there is some bleach smell remaining after the camelbak dries will baking soda work for removing the bleach smell?

Just dry it and air it out. Chlorine is used in city water filtration systems too. It'll evaporate if left standing.