Yes, only worse and I am not joking, op I know how you feel. 2 sons shared a room, it was always a shit tip from them being young. Got fed up with clearing it up all the time. Used to get them to do it, it would take them all day, complaing, moaning, stopping to go on the x box, etc. If they put their mind to it they could have been done in 30 minutes. It took them all day.
Moved to a new house 4 years ago, new carpets, curtains, fresh decoration, new beds etc, told no eating upstairs allowed etc, within a month it was a shit tip. For my mental health I had to shut the door and leave it. Food, plates, takeaway etc.
Ds1 moved out, ds2 did the room up, it did get messy but if I nagged enough he would clean it. A month ago Ds1 moved back, yesterday I had a shit fit at them. You couldn’t even walk in the room due to all the clothes everywhere, and the rubbish, mounds and mounds of rubbish.
It depresses the shit out of me to see how disgusting the room is. I could quite happily kick the pair out. They ignore our rule of no eating upstairs and it takes a fucking melt down from me to get them to clean up.