Nope. Haven’t even thought about it honestly. Seems silly. I’m sure that the bottles the flavorings and all the rest of the things come in haven’t been prewashed.

I’m already doing extra work compared to ordering a bunch of juice online and just vaping it. Not gonna make more for myself.

That said, if it bothers you, wash them. No harm in it, as long as you let them dry completely before use.

Though.... I’d double check what your water quality is beforehand. Plenty of stuff could be in your water and then once it dries that residue will be in the bottle ;-P

It’s a never ending circle!

Yes. They should be clean, but I'd rather be safe than sorry.

Always.

I wash everything that's going to come into contact with what I'll eventually be inhaling.

I have no idea what they may have been exposed to, or the conditions they were kept in, before I bought them.

Uh, yes.

Why would you ever trust that something is cleaned by factory workers in China making 0.35USD/week?

I usually shake glass bottles with water and a bit dish soap, rinse well and let it dry. I often make sure it is dry before use by inserting a paper towel few two minutes (followed by a spin).

No. Why? I guess you could answer that by asking another question: The companies you're buying flavors, juice, VG, whatever from, do you think they clean out the thousands of thousands of bottles they have shipped to them before filling them with their product? Chances are no, they do not. So, you've probably already vaped plenty of whatever "residue" may come in a brand new bottle, so why worry about it now? To each their own, though.

No, I do not want any water residue in my e liquid. I reuse few times and throw it away. If you ask why, my tap water has high amount of lime and chloric content.

Yep. I just feel like its a good idea seeing how cheap these bottles are, a rinse with hot water can't hurt imo 👍

I always did (switched to LDPE now). I often had a film on the water after I initially soaked them, so there was something on the glass when new. Always worth cleaning.

Depends on your supplier. If you are buying from a shop maybe wash them because they probably have been handled a lot. If you ask your supplier if you should wash them and they say yes.....Wash them obviously. Most large orders have bottles made to ship so they will be squeaky clean and washed. Ask your supplier

Yes. Between batches I do a baking soda slurry. Let it sit a couple of days.

If you're worried about water ruining your mixes use distilled water to clean and rinse with. The minerals in your tap water can alter the flavors.

I wash everything I buy to hold anything I’m going to eat, drink or otherwise consume. You can’t assume a bottle, cup or whatever is clean and it doesn’t take much effort to wash stuff and set them to air dry for a day before using them if you can’t easily dry them.

p.s. if you’re worried about water content you can buy a gallon of distilled water to rinse with at the store for a couple dollars. That’s what cigar guys like myself use to humidify their humidors because it has no impurities and won’t grow mold.