Dr B's soap is good for wool or any baby shampoo for your hair is good for wool.Believe it or not,Woolite is actually too high of a pH for wool really.

Make sure you use a detergent,not soap.You can use hot water on wool if you like,it won't hurt it.Agitation with soapy water is what makes it shrink or full,not the water temp.

Try taking an old wool sweater or sock and getting it wet,then rub a bar of soap on it and see what happens.It will shrink before your very eyes.