I'M AMAZED AT THE ANSWERS you got from J. P., Somer G., CaresseT., Diane D. and Julie B. THEIR ANSWERS ARE FANTASTIC. I could copy and post their answers but you can scroll down and read them.
The more you do for your lazy children the more they will expect you to do for them. If you keep it up you will be a slave in your own home. AND you will raise worthless adults. They won't love you for it and you will be dispised by your own children.
Teach your kids. Teach them to be responsible adults. Teach them the skills they will need to be responsible adults. I've seen the homes of adults that weren't taught to clean and care for themselves. One lady had to come and ask for help from our church womens' organization (The Relief Society) because she was never taught and REQUIRED by her family to do those things. (Child Welfare inspected her home and threatened to take away her children if she didn't provide a "safe, clean" place for her kids.)
I learned to wash my clothes when I moved away to college. My kids learned to wash their clothes when they were 9 to 12 years old. They washed their clothes from then on. If they didn't have clean clothes we made them wash them. If they needed to wash their sheets, then we made them wash them. We took away privledges and if they didn't learn that way then I would swat. I gave them a choice. Do the work before or after the punishment. Occasionaly, they chose the punishment first. I hated that, but some people have to learn the hard way.
I insisted my kids do their homework. I told them it was just practice school. I insisted they wash their dishes. If some one got a dirty plate or fork or etc. the one that washed the dishes had to eat using the dirty utensil. If there were two dirty utensils, the one that dried the dishes and put them away had to eat using the dirty utensil. For your kids that refuse to wash the dishes, I'd give the one that was supposed to wash the dishes the dirtiest looking plate, cup and silverware I could find. I'd let the one that is supposed to dry and put them the second dirtiest stuff. I'd give everyone else clean stuff. If the napkins weren't thrown away, I'd give the washer and dryer dirty napkins to use. If they tried to wash them before using them, tell them they could wash them after dinner. If they refused to eat off them, no dinner or drinks until the next morning. I'd guard the frig and pantry to ensure they wouldn't sneak anything to eat.
In our house, one person washed and another dryed and put away. The one that dryed was the quality control check on the washer. If the dryer found something dirty it was their responsibility to make sure it got put back in the dirty dishes to be washed. That process solved our dirty dishes problem. My kids knew I was serious and we only had one or two times in all the time we had kids that the washer and dryer both had to eat off dirty dishes.
Suggestion . . . Have a family meeting. Make a list of all the jobs/chores that have to be done. If you have 6 people over 6 in your home then you should make a list of 5 sets of jobs. We started with the easiest jobs and ended up with the hardest jobs. Each child and adult had one week on the job list. When Sunday rolled around we switched jobs. If someone hadn't completed their job, then they began the next set of jobs and continued doing the old job until they finished it. One week was for "vacation" and no jobs. It was saved for right after the week with the toughest job. Everyone was expected to do their personal jobs, like washing their own clothes, cleaning their own room, weeding their own garden. Weeding the family garden, and that kind of thing was a week long job.
I fought the battle and won. You can see my profile. My son that refused to do home work until I insisted, ended up with a full ride 4 year scholarship because he made salutatorian (#2 graduate in high school). He will graduate from USC Med School in May 2011. YES!!!! it was worth all the tears and anger and fighting.
You have plenty of suggestions. If you need help or ideas from me, e-mail me. "A mind and life is a terrible thing to waste."
Good luck to you and yours.