Emergency toilet use without flush ability. remove water. Line pot with trash bag. Have a pail of wood ash, quicklime, kitty litter or sawdust available so that after each duty is done, the offender can sprinkle a liberal amount over it. This will keep the stench down.Finally, when the bag is filled up 2/3 the volume of the bowl, add a good amount of quicklime, wood ash or use dirt with a little bit of a chlorine solution sprayed in it. Seal bag, replace. Store in sealed bucket if possible.
Pour it on and the sand comes right off. A must have for any trip to the beach.