My DP moved in at the beginning of the year, followed fairly soon after by his 12 year old DS and 13 year old DD who live with us full time (maybe 5 nights in total with their mum since March). I don't have any kids so it's just the four of us, we all get on really well most of the time but not when I ask the kids to help around the house, l have asked them each to wash up once a week and keep their bedroom reasonably tidy which I think is not a lot at all, they seem to think it is totally unreasonable, the 12 year old has just had a complete melt down with shouting and tears because he hates washing up and it's not fair that he has to do it. The 13 year old also makes a big fuss though she usually just sulks. My DP often works late so misses the drama but completly backs me up and has explained to both that it is a small contribution to the household. I don't want to give in to them as I think it is important that they learn some skills to contribute to their home, but I don't want to get angry with them, I accept that no one wants to wash up but when I've asked them to do something else instead I get the same response. When living with their mum they didn't do any chores so it is a shock to their system, how do you get your step children or partners children to do chores around the house without all the drama.