For the following question assume the false premise that humans have large bat-like wings.
What are some good ways to wash the back of my wings where I cannot reach?
1 - Get someone else to assist you.
2 - Use a long-handled brush or cloth.
3 - Place yourself in a bathtub and wash the wings with a showerhead.
4 - Hang upside down and use a basin of water and cloth.
5 - Get a special shower attachment designed for cleaning hard-to-reach areas.
Where would I buy such a brush?