Hello. My best and fastest approach is with my fingers. I get into the plant, up to the elbows if need be. Squish anything you can see and feel. Yes it's a little gross feeling, but they are eating your baby. so SQUISH THEM. The female aphid walks onto your plant pregnant, and they have a 3 day maturation rate after birth. You can use whatever spray after you squish them. You don't just squish the adults you also mess up the eggs. You might dislodge the eggs or even squish them. If you dislodge a adult feeding aphid, you have just broken its mouth or sucker. Even if it lives it can't suck anymore. Rinse with water after, leave to dry, then spray with your choice of stuff. But if you do a good job squishing you will have killed 85% to 95% of them. Good Luck. Chuck.