It's really difficult to get the right balance, trying to be chemical free but when the aphids have taken over everything, my patience is starting to wane and I am tempted to go down the Chemical Warfare Road, however, I may have a solution, which may be a blessing for me and a pain for the Aphids. My next plan of attack is to bring home some of the coffee granules from the coffee perculator in work and then add that to the base of my plants, and then add coffee to my spray and douse the aphids with it. If I hear them asking for Latte or an Americano I will give up!!