I've sprayed neem oil a number of times now, and they just keep coming back. I've rubbed stems with a cloth dipped in neem as well, wiping off all the scales I could find. Have also tried insecticidal soap, both sides of leaves etc.
These bushes are almost getting too big for all the fiddling.
Is there another for sure method to irradicate scales? Ideally not a chemical pesticide. Thanks!