I have been doing heads now for about 6 years. My process is to have beetles clean the head, then into a 120 degree five gallon bucket with 1/2 cup ace ammonia and 1/4 cup dawn clear dawn dish soap with bleach alternative. This degreases heads from 9 weeks to 14 weeks. The problem I'm having now is back then I purchased a lot of the dawn soap and am running out. In reading the forums people are talking they still use the clear dawn but which one. there are a few but can't pin down what everyone is using. Can't find what I used to use and the company isn't forth coming in which one is the most like the old soap. Any help would be appreciated.