Will Yates pyrethrum get rid of aphids?
Certified GKH Gardening Expert
This should do the trick. For harder to treat infections, there many other methods available. For more information on insect pest control refer to this article: https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm
Pyrethrum will kill aphids; however, even the Will Yates website recommends an insecticidal soap spray. Pyrethrum adversely affects beneficial insects and is best left for difficult to control bugs. Here is an article that discusses insecticidal soap and how to make your own. https://www.gardeningknowhow.com/plant-problems/pests/pesticides/homemade-soap-spray.htm