Remove entire sand
You need to remove all the sand from your sandbox. Use a shovel for this purpose. In case the sand is covered with animal litter, contain dead bugs or moistened, you need to throw it away. In case a sandbox contains sand with moisture, it will grow mold. In case the sand is new, you can place it back in the sandbox.
Clean any remaining sand with damp cloth
Next you need to clean any remaining sand particles in the sandbox. Use a damp cloth to wipe out remaining sand. When the cloth is full of sand, shake it off in the outside of the sandbox.
Rinse the sandbox
Now you need to rinse the bottom and sides of the sandbox. Use a garden hose for this purpose.
Next you need to spray an aerosol disinfectant on the inner portion of the sandbox. You can use Lysol for this purpose.
Dry the sandbox
After applying aerosol disinfectant, you need to dry the sandbox before filling the sand again. Get bagged sand labelled as play or sandbox sand. Remember that this sand is sterilised and best for this purpose.
After cleaning the sandbox, you need to use deodorants or air fresheners in order to ward off the unpleasant smell which will resist children from approaching it. You can use deodorants which are going to expire or about to finish.
Cover when not in use
You can cover your sandbox with a thick plastic cover or a blue tarp in order to keep it clean. This cover will prevent neighbouring pets and other animals from littering in the sandbox. In addition to this, the cover will also protect the sandbox from moisture and dead bugs.