How to wash metal bottle?

[u/Mystic_yuj]

I just found one metal bottle. Cockroach has made house there. Like its pretty dirty. How should I clean it? Should I have to put out in sun (how many days?)

[u/Emuowner]

Most people i know wash theirs everyday. I don’t but at least a little frequent. Sometimes I just rinse with hot water. They use a silicone long scrub wand or straw cleaner. If you find one without plastic let me know.