I add 1 tablespoon to a spray bottle full of RO water and spray apply to the bottom and top of the leaves. Once dried, it starts cutting them up. Not sure about it being instant though. My method is controversial and some of the veteran growers here think it is not advised, but I have yet to see any problems.
Check this out, I made up a solution for bugs on our squash out of ghost chilis. Seemed to have worked.