Mine too, but over the years I have learnt simply to refuse to enter the kitchen until he has cleared up - even refusing to cook Sunday lunch the following day to show I meant business. Luckily for me, he loves cooking and is wonderful at it, so threats like that work. I told him that the sight of the kitchen, and the thought of having to clear up after him, depressed me so much and made me not want him to cook, even though it gave me a night off from cooking I would rather have had a takeaway. He took that on board and now clears up, although the floor may still be somewhat floury the next day.
I once hired a chef to come to our house and give him cookery lessons, as a birthday present. She was a teacher at the Prue Leith cookery school. When she asked what he wanted to learn, I told her that I really didn't mind, nor did he, but that what I really, really wanted her to do was show him how to clear up after himself as he went along. She knew exactly what I meant.
He ignored my years of entreaties, but paid attention to a professional.