I found my TSP but it was phoshate free. Does that hurt the effectiveness of the TSP? Man all these chems are driving me crazy. I'm going to really have to lock all these chems up becuase of my curious toddlers. I'm going to be a roof cleaning fool here before too long. My fat rumps going to make those rafters creak for sure! Please let me know about the phosphate free s****. Thanks compadres!