So what we have here is a request to comment on a product that as far as I can tell isn't manufactured "Rain x" and attempts to comment that clearly show that the assumed mfr of this "Rain x" makes a number of different use products. So maybe if the OP instead of describing the product as coming out of a "back back sprayer", which means absolutely nothing to me, the OP could go back and actually find out what was being used and clarify the question Maybe then comments would be more on point??