I'm sorry I have been away for a few days. I was a vendor at a pepper festival this weekend and I have been working on my taxes for the last few days. Just to answer a few questions. Evan though it may work a little bit, blending grounds and showing will only work in a minimal way. You want to cook the alkaloids out of the grounds so the spray will be at high potency. You can cook it many ways. I do it slowly in my barrel. You can take the used grounds and just run it through the coffee machine over and over, until it liquid us real dark. How many times you need to brew it will depend on how many grounds you start with. You can put lots of grounds and cook them in water in a big pot until the water is tall dark. You would have to strain this mixture before you use it in a sprayer. As a direct contact spray, the coffee will kill mealy bugs, aphids, all kinds of scales, white flies, and spider mites. Tom
