Is it possible to remove the app and the leftovers together?

Does anyone know of any suggestions for removing an application? to move all related files from other locations on the Mac, not just the item itself, to the trash.

If you want to remove an app and delete its generated files together, you will need a third-party app uninstaller for Mac. CleanMyApp can help uninstall unwanted apps and automatically delete the related files, you can get it for free now. Without such a thrid-party tool, you will need to manually locate the leftover in related folders and move them to Trash.