I discovered a way to keep my hands clean after eating with my hands outdoors...
Have you ever eaten some food that you need to use your hand? Like chicken wings, chilli crab, steamed prawn and stuff like that. If you don't use your hand, it won't be 'shiok' (meaning 'no fun')
And then I'll drink only one-third of that and guess what?
I'll wash my hands with the balance two-third of the water :-) And she'll say, "That's expensive...paying a dollar just to wash your hands. You've got a bad spending habit!"