I am guessing since you mention bees, that is immidacloprid that you are using? I know that can kill bees and it has been banned in Canada for this reason. I never use it on my plants outdoor though.
ah ok. I guess I will use imidacloprid then. I used it recently on my indoor orchids and they did not have any problem with it. I have not checked if the scales are gone. Thanks a lot!