Whilst my 3 aren't as old as yours (10,8 & 6) they are expected to help out. We have just had dinner, after dinner they clear and clean the table. They are all expected to put dirty washing into the basket on the landing and make their beds daily. They all also put their own clothes away.
If their bedrooms are messy and they don't tidy they get one warning that if they don't sort it anything out of place goes in the bin.
Cheeky behaviour results in tablets being removed for the weekend (the only time they get to have it term time) and continued bad behaviour results in Brownies,Cubs, Beavers being missed along with swimming.
My middle son said I couldn't do that as its a waste of money. I told him that as I pay for it, it's my choice what I do with my money and if I choose to waste it then that's upto me.
The only thing I won't take away is books. Everything else is a privilege that has to be earned. So far its working for me so fingers crossed it stays that way.
I wish you luck xxx