Pesticide application question.

[BrassavolaStars]

Hello all,

So, as many may know by now, I have a pretty bad scale problem. It was suggested to be to use acephate. This is the one I have: https://www.amazon.com/Acephate-Gene...n%2C184&sr=1-1
I thought I would mix it into one of these hose mixers Ortho(R) Dial N Spray(R) Hose End Sprayer (since my Chapin 1-gallon sprayers have pretty low water pressure) and spray.

I am having second thoughts now. I mixed up 6 tablespoons into the 32-ounce chamber and set it to pull 2 oz at a time.

It doesn't seem like the granules are dissolving and then looking at the label for the mixer, it says "Only for Orthene liquid products, do not add water. I am wondering if the tubes on this mixer will even collect the acephate properly.

Maybe I should dump it out (where, I am not quite sure yet) and start over? Is what am I doing correct, safe, or effective? I have masks, gloves, goggles and a ppe suit now.