A 3-compartment sink can be used for washing dishes by hand as an alternative to an expensive dishmachine or in addition to a dishwasher for washing stubborn pots and pans. In a 3-bay sink, the first compartment is used for the initial rinse with hot water. The second compartment is used to wash dishes in a detergent solution, cutting grease and removing any remaining residue. Finally, wares are submerged in the third compartment into a sanitizing solution that kills remaining bacteria. The hot water generally used in that third step helps dishes dry quickly on the drainboard of your three-compartment sink or a separate drying rack.