Its taken them all day to not clean their room?

I had a neighbor who tried the same thing you are trying. She realized that they didn't care because they had a game system, stereo, and plenty of other media. She took all that out after a day of the room not getting clean. It still wasn't done later, so she got clever. Electricity was shut off for that room until it was dark, then it was turned back on, but there was only another 15 minutes until bedtime anyway. So no lights or anything they had managed to find that plugged in and was interesting anymore. I thought she had a great idea. The day after she shut the electricity off in only their room they started to clean and it was done within 2 hours. This idea, of course, only works if they do not *need* electricity for medical issues or some other vital reason they would need it in their room.