ISO / water mix .... poof ! .....
Alcohol penetrates waxy ( procuticle ) and kills on contact . Alcohol portion of mix will evaporate quickly and not harm plant.
One or two drops of dawn will make it into an “ insecticidal soap “ that will cling but a straight blast will work.
I have used this on mites at times .... blast / 15 min/ blast . Under micro , insect were non moving and shriveled . Mist spray water wash to dislodge corpses and then it’s sunshine and rainbows.
I altered mix with everclear ( grain ) to fight the Borg ( mites ) and won EVERYTIME . Or as stated a “ broad spectrum “ insecticide like
spinosad ( capt. jack’s ) or similar for “ veg garden use “ will suffice.