In Costa Rica they use the ever popular suicide showers!
“So here’s my technique: Bring two towels to the shower. While still dry, adjust the water pressure to get a decently warm temperature. Hop in the shower, do your thang and avoid thinking about things like wills, funerals and barbecues. And for God’s sake, don’t touch anything.”
http://johnnyvagabond.com/travel-tips/survive-suicide-shower/
“If any of that is too daunting, just skip the shower. Everyone expects backpackers to be a bit smelly anyway.”
they forgot to add “with maggots under their scalp too”