I am going to let my Tree Hugger side come out and suggest imidacloprid as a Preventive. In fact if the aphids aren't too bad I might use it as a Curative. The Idea is imidacloprid only controls bad insects and not the Predator insects.
IPM stands or I Pay Materials (in my book at least). To me good IPM is preventative treatment of a good systemic that only effects the bad insects. I try to Up Sell Ornamental Shrub Pest Control because it is so easy and PROFITABLE.
it is one thing to do a off label applications. It is total stupidity to post it on the world wide web and expect people to approve.
You can lead a Donkey to water but you can't make the Jackass Drink