I have two DSs 16 and 19 - for as long as I can remember I have been battling to get them, the older one, to do simple things like put their clothes into the laundry basket, rather than on the floor; bring plates out of bedroom; blah blah blah.
I withdraw services - don't cook or wash etc and things improve for a day or so, and then they carry on as normal. I tell them they're being disrespectul but they mainly regard it as a joke between one and just buy pizzas themselves - the elder one earns money and doesn'tmind spending it on food for them both.
I realise they often don't see the mess, and its of no consequence to them, "its my bedroom", but I like to live in a tidyish house.
They know how to wash their own clothes and they can cook their own meals, but I like to to cook for them when they've been at college/work and I prefer their clothes to be washed regularly - they would just wear everything and then find something on the floor to wear, or wash the one item they want to wear.
I know I'm imposing my standards on them, but don't think they're unreasonable and I obviously missed the chance to train them into tidiness long ago.
Advice please.