Most economical soap for wool bed pads?

[mama_times5]

I don't plan on wool covers with the next baby at this point but have a number of wool crib and lap pads that will be enjoyed. I'm out of the eucalan I used before. They are all heavily felted and go in the machine, so I'm not too worried about them but I want them to work. Sm pricey bottles of wash seem silly considering what it's for. Could I use baby wash and some good smelling spray lanolin? Any specific machine instructions?