DH and I (wfh) usually have 1-2 evenings a week where we both have to work until 7/ have later meetings. We have a nanny who comes 4 days a week, usually until 4 but on these late evening she stays until 7:30.
As part of our agreement she cooks DC dinner on these nights, always something made from scratch and the DC love it. The only problem is she uses just about every pot, pan, dish and spoon in the kitchen to make it, she'll weigh out ingredients in different bowls, use a spoon to stir something and put it straight in the wash bowl or dishwasher only to get a new one out 2 mins later.
She seems to always find a reason to not wash up, she'll suddenly whisk the DC off to another room and make some game that she 'has' to play with them. I've asked a couple of times for her to tidy the kitchen and she's said she'd do it in a minute but never does and when she leaves says 'oh gosh so sorry forgot to wash up' and DH and I spend the next hour blitzing the kitchen to make our own dinner whilst trying to wrangle DC into bed.
How do I politely insist she washes up? DC are good at entertaining themselves and I'm usually downstairs not long after DC dinner anyway so she could do the washing up while I spend time with them. She cleans up after they've done painting or messy play and tidies their toys to reset the room and she's run the hoover around and cleaned the (already clean) kitchen before so she does know it's in our agreement?