You should wipe your mop’s pad after each usage to ensure that it is hygienic. Because many modern mop heads can be washed in the washing machine, maintaining a clean mop is a breeze.
It’s also an option to get one that includes single-use pads that you can just throw away. It’s best to wipe out the water tank of spray mops after few usage (if not every use). The tank may be cleaned using a moderate solution of distilled white vinegar and water, but it’s important to read the user handbook first.