You've gotten the answer several times in this thread. I don't know what more you are hoping for. This isn't rocket surgery
1. Give them a deadline, throw stuff out after
2. Pack up stuff, drop off at their place
3. Pack up stuff, put in storage, drop off key
If you are expecting them to come over, apologize for the inconvenience, clean the place up, and take you for a thank you dinner, wake up! It isn't happening.
Take the 2 hrs, clean/pack their stuff, give them a date, and then throw it out. The peace of mind and getting your rooms back is worth the effort!
THEY AREN'T COMING TO CLEAN IT UP!