Come on, Just make a new one.
I think as long as it is not coated soaking it in the bath tub is the best method. If it is coated I could see some deterrgents harming the coating. Maybe not once or twice, but over time I think it could remove a good part of the coating.
Is that too much to ask? Girls with frikkin' lasers on their heads?
The hanger formly known as "hammock engineer".