D.N.
Ha, you have my children. It is such a struggle. My kids complained that I did not write the chores down for them. So I made a list. Then they didn't know the list was there. Really. Everyday, I get home and most of the stuff is not done. Though my son does his best to get his stuff done. My fight with him is getting his homework done-if he remembered to bring it all home. He is a procrastinator. I make the kids go over their list every night and they have to do their chores before they get to do anything else. Even better is when we are watching a good show on Discover Channel or Animal Planet-or Hannah Montana is on. They miss out. I have also grounded them for continuously not doing these. My kids are not ADHD or anything like that. But one of my girls has my father's stubborn streak and she is always right. My nephew is ADHD and my brother treats him just like any other child with punishment and grounding so I am guessing yo ucould do the same.
Lately, I have started adding extra chores to their list for not completing something. My daughter saw the new list last night and complained that my son has less stuff to do . i told her it is because she doesn't finish her stuff. Oh well.
We also have a cat and I have threatened to give them a small bowl of food for the day so they can see what it is like to only get fed one time for the whole day. They didn't care for that at all. I think the hardest part is that when you are not home to supervise the chores, they can kind of get away with not doing them. These are stubborn years.