This is about ds2 but could easily be about ds1 or DH.
Two teenagers (15 and 16yo) in the the house and DH. We all take turn in doing the washing up. ds1 and ds2 are 'in charge' of breakfast.
This am once again, ds2 had his bfast last but just went back upstairs after 'vaguely' tidying up (think things like the bottle of milk that was forgoten on the worktop, crums all over etc...). Washing up all over the kitchen left.
I got annoyed and started the doing the washing up. At the sound of water, ds2 magically appeared asking me if I wanted him to help and do it instead.... 
I am torn. Should I insist that he is doing the washing up straight after finishing (And I have all the 'But I am going to do it in my own time. Stop bugging me. You are 'controlling')?
Or should I live with the mess of pans all over the kitchen for the whole morning, having to face that each time I am going to prepare a cup of tea. And knowing that it is totally possible that said mess will still be there at lunch time when I will start to prepare lunch (which means ds2 will not do the washing up because either I will do it before starting cooking to have some space or whoever is washing up at lunch time will do it).
I am getting annoyed at the fact that none of them, incl DH, have any sense of responsibility when it comes to tidying up the kitchen and are all happy to 'delay' doing those chores (seemingly in the hope someone else will step up). But at the same time, I am aware that some people will see that as nagging.
So what do you think is right?
YABU: you should leave them do things in their own time even if this means the kitchen being a mess for the whole morning
YANBU: whoever is doing the washing up that morning should do it straight away