The property casually throws things at the owner's door.

First, a notice is issued asking the owners to clean up their own piles within a time limit, and those that are not cleaned will be treated as ownerless items;

The second is to print the date when the property is released and the main pile is cleared;

The third is centralized cleaning, temporary stacking, and notifying the owner to claim it within a time limit;

The fourth is to clean up the books.