Cleaning and Damage. Online rental platforms let you charge cleaning fees so that you aren’t financially on the hook for the full cost of a post-tenant professional cleaning. Most cover the cost of renter-caused damage too, provided you properly document and report it. But financial redress only goes so far. You still have to deal with the inevitable investment of time and energy to fix the damage or clean up the mess.
Regardless if you need to earn some fast cash or we're just talking about making money in the grand scheme of things, there's an important psychology that needs to be mentioned before getting into the strategies. If you study Freud's model of the mind, you'll discover the Psychic Apparatus. It's the three-part construct in your mind that controls all of your behavior.