My family lives on the first floor, and the third floor always throws water, garbage and even children's excrement underneath. Attribute is not strong, in theory, people are more fierce than you.

1, communicate with the property management company and ask it to negotiate with the upstairs;

2. If the property company prevaricates, it can complain to the property company, specifically: complain to the headquarters of the property company or complain to the property management department of the Housing Authority, the competent department of the industry; You can also refuse to pay property management fees, water batteries, elevator fees and other expenses on this grounds.

thank you