What should the owner do if the property litters?

Take a photo and talk to the property management company. Limit the time limit. And inform it that it has an impact.

How to better serve the owners if the work of the property company is not standardized? What is the standard? Where did the expenses go?

Say, if you don't handle it, you won't pay the property fee.

You can also report to the community and complain to the property authorities. ...

I hope to give you a reference.