I Leave aphids be. It may look alarming but It is a necessary step in regaining a balance of good bugs and bad in "Symbiosis". I am looking forward to see which beneficial insects show up to help the planet manage the aphids. Aphids feed through a needle-like mouthpart. After they insert their mouthpart into a plant's tissue, they then use it like a straw to suck out plant juices. The do not kill the host plant. Aphids aid benefical bugs they are food for thousands of different species of predatory insects. As protein Aphids help build a broad diversity of beneficial bugs in nature.
After writing this post I came across one of the most interesting insect control articles.
We have so much to unlearn.