This myth discounts several hard realities. It discounts the ability of an ADHD kid to make a tremendous mess — tremendously fast. I can leave a clean playroom, come back ten minutes later, and find a federal disaster area, complete with caution tape. There’s some complicated mathematical formula related to the time it took to make the mess vis-a-vis the time it takes to unmake it, but rest assured those are both a) out of proportion, and b) far exceeding the actual time in your day.
This also discounts the fact that my kids, by definition of their neurological difference, do not have the attention span required to clean for that amount of time. Nor do they have the ability to survey a mess, break it into its component parts, and pick it up bit by bit. They see a horrifying conglomeration that, like Lady MacBeth’s hands, will never be clean.
So either you help them, you coach them, or you do it yourself.
[Free Resource: What NOT to Say to a Child with ADHD]