Mess :-(
Four DC, oldest is 11, youngest is 4. Two diagnosed with ASD, strongly suspect ADHD in a third. One of those with ASD also has a diagnosis of PDA (so, demand avoidance) and ADHD. My oldest who has ASD also scores very highly on demand avoidance. So do I, and I have poor executive function too.
So, you can imagine. None of the children ever want to help, but they're all great with making the place a bloody tip, especially the one with PDA ironically, particularly during a meltdown.
It's not as dreadful as it could be though, because DH does an okay job of tidying (when I actually do tidy, I get obsessive, so he's nowhere near my standards) and most importantly, we have a cleaner. That makes us keep the place reasonable ready for them weekly. Also the nanny keeps on top of the toys in the living room and in their bedrooms, and does most of their laundry.
I've learned to be a bit easier on myself. Most of the people with immaculate homes probably have a) the exact opposite of my demand avoidance and executive functioning fail and b) children that don't actively make the place much worse due to their SEN and c) not four children, or at the very least children who are able to help.
It's hygienic, and the floors and important surfaces are usually clear, so given the circumstances we're doing okay. Most of it is clutter on surfaces that I need to sort through but don't have the energy or time to do so.