Keep flies away from outdoor food. I wish I would have seen this before our last camping trip.
You will surprised to see all the makeup that is left in the water. How to properly clean your makeup brushes. (a tablespoon of white vinegar in a cup of hot water, and a 20 minute soak, followed by a hot, then cold rinse and pat dry will do it. Disinfects, dissolves grease/makeup, leaves no film, and inexpensive.)