I do not remember in which forum I read it but from the 75% concentrate a third of a teaspoon of the powder is used for a gallon of water. Making the solution with the 50% has no problem, the challenge is that we do not know what the other ingredients are because it does not say non-active ingredients and as it is for ants, it can be anything. Really the safest is the one that says for ornamental plants and it is the one that does not appear, like the Orthenex that they say that it is not going to sell anymore. If Orthenex is 4%, what does it say about the other ingredients? active or not active? Is it a spray to use like this?
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