Discard any water that is currently in the water container.
Fill the container with fresh water, adding one squirt of dish soap and 2 tsp. of disinfectant per gallon of water used. Use either white vinegar, which is a natural cleaning and disinfecting agent, or use chlorine bleach, which also cleans and disinfects. Do not mix vinegar and bleach.
Agitate the container to dissolve ingredients. Let sit for 20 minutes.
Discard the cleaning solution, and wipe the interior of the container with a cleaning rag if needed.
Rinse the container thoroughly with hot water to get rid of all of the cleaning residue.
Fill the container with fresh water, and store.