Tim, not sure what you are removing--wax,rust etc.
A mix of vinegar and water ,will remove a lot of junk.Because vinegar is an acid,rinse real well.The traps will get surface rust on it quickly.Last traps I soaked ,I did 50/50 water vinegar mix.
I have always been hesitant with muratic acid.If you watch tour traps very closely,you could go with a heavier concentration of vinegar.
Tom