Always have some laundry detergent in your pack.
I bring a tiny vial of lavender essential oil with me wherever I go. I picked it up in Croatia, and it is great for making laundry smell fresher after being washed in the sink.
Anything that’s been washed in the sink multiple times in a row will start to get a weird funk. It’s worth it to spring for a laundromat or a place with a washer every once in a while.
Contributor: Nick Brennan