what are your whats adding IPA to the apple sauce mix, here in Western Canada we get some pretty black roofs with quite a bit of moss and I have had to heat up my mix from 20 gallons of SH 30 gallons of water and 1 quarter of a gallon of Myrastamine to 25 gallons of SH 25 gallons water and 1 quarter gallon of Mystamine, to do the job, maybe I should be using Alcohol and less SH , any thoughts?