The simplest solution is to close access to bins for unauthorized persons by enclosing the space (in cooperation with the Municipal Office and the waste disposer). It is a one-time financial item that needs to be set aside for this, but on the other hand you will save for waste collection (there will not be so much) and the cleanliness of the dustbin stand (you will save for fines from the City Police), for which you are responsible. File a criminal complaint with the City Police (or the State Police) at the illegal landfill, which is also this method of disposing of the built waste by the company in question. This is a violation of the "Waste Act" on the disposal of built waste. Special landfills (for a fee) are designated for the disposal of construction waste, you can find out about their location at the Municipal Office.