Got it – I hadn’t quite grasped the layout.
It depends how aggressive you want to get on this. Perhaps closing the screen door noisily a couple of times might get their attention.
Or just waiting till you see them and asking politely if they wouldn’t mind.
Or getting up at 3am one morning and removing the screen door completely and leaving it by the bins.
Or printing out this thread and slipping it under their door.
Either way, this strikes me as the kind of issue that could be resolved with a polite request – or it could just as easily escalate to World War Three.
I would go with polite request … but have my missiles armed and ready in their silos.