when the moths crawl up under the bark real tight and you spray very little of the oil your trying to smother them with reaches it's intended target making it basically a waste of time...not to mention the difficulty in reaching very tall trees where you'd need up to 125 to 200 psi pressure to get that high. So the solution is going to have to come from the biologists engineering an intervention of some sort like how they released insects into the environment that couldnt reproduce.
Its going to have to take a much different approach like the introduction of a species of bird that will eat them or some new kind of light with a new bugg zapper built into it.... because chemicals even something benign like dormant oil sprays still end up back in the environment. when i raise bees commercially i will have all the hives indoors and they will be of my own hexagon design instead of the standard frames and i'll make them my way.
i remember spraying around this million dollar home with chlordane before it was made illegal and it killed all the damn ants for several weeks and i thought...i win.... and then Son Of a Beotch they were back and i looked and looked and couldnt figure out how they did this.....then i noticed this one oak tree had a wire running from the house to the oak which was 50 feet away and they had changed tactics avoiding the ground completely and came down that wire.
