I used to work at a greenhouse and we would mix about 1/2floz - 1floz to a gallon. It works well but you have to reapply every couple days. I believe that it will kill the insects but not eggs, so you have to spray every few days to kill the adults before they lay eggs, eventually they will all be dead. It could be the other way around not sure, which came first the aphid or the egg
. But anyway spray every couple days for a week or two. If by chance the solution causes any kind of leaf burn, just spray the leaves with plain water and then dilute your pine-sol solution even more. The greenhouse i worked at also did interior landscaping and we used pine sol because it was super safe around people and we didnt have to pull permits and suit up in gear to spray, plus the businesses didnt have to shut down because of toxic chemicals(we were spraying huge palms). The active ingredient is, hold your breath.......Pine Oil! It is biodegradable and in the solutions recommended you could drink it (not that you want to). When we were spraying it would get in our eyes and mouth and all over us and it never caused any irritation to my eyes or skin and i have sensitive skin. I wouldnt advise spraying on buds during flowering but you could still spray the leaves very carefully or wet a cloth with the solution and wipe them down. I know that its safe to consume but i\'m not sure how it would affect your smoke. But if you stay on top of spraying prior to flowering than you should have eradicated the pest problem when that time comes. Good luck