How did they get the self-deniers who consider men to be infants! Wives and mothers regularly emerge, now also the sister Alenushka! Your brother is an adult man, so it is enough to educate him and:
1) Stop performing the function of the general cleaner. Do you maintain cleanliness? The young man.
Prepare for yourself separately. If your brother does not take care of how his wife feeds him, they and their wife will solve the matter BOTH.
3) Wash in turn. Take care of your things, not someone else’s clothes. Judging by the passage of unpaid debts, you have different budgets with your brother. His money is his choice, whether to spend it on his wife’s dress and plushes. Don't satisfy his spending - don't give him your money (in a difficult situation you can provide foods and necessary things, if he is already on the pitch), and you don't need to educate him. If the request of his wife creates him a problem, let him again deal with his wife.

Most likely, the brother does not see the problem precisely because you break your head and throw everything behind his wife to clean up. The inconvenience is only for you.