hand sanitizer is the cleanest you're going to get. i can't stress how much this helped me retain my sanity throughout the trek. running water exists once every 3 or 4 hours & soap is nowhere to be found. bathrooms are squat toilets (holes in the ground) & you never know what types of dirty things you may come across. i recomment sanitizer by Shobha. it's small enought that it'll fit in any pocket and one spray is all you need to clean your hands. another big plus is that it's unscented! my friend brought along some apple martini scented hand gel which i'm sure only the jungle mosquitos found attractive.