MÜLLweg! DE is the official app of the Federal Agency for Nature Conservation (Bundesamt für Umwelt und Gesundheit, BUG) and the German Environmental Foundation (DB). It provides information on how to report environmental issues, such as landfills, industrial areas, and other places where trash, debris, or other waste can be found. 

The app gives you the option to report a specific location by clicking on a map or selecting a text address. Once you click on the map, you will be able to find information about the location, such as the type of the location, its address, and the date it was reported. You will also be able to add a photo of the location. If you want to add a specific address to your report, you will need to enter the city and the state or region where the location is found.