Does anyone know anything about woolly aphids? I have them on my crabapple tree. I have had a tree surgeon look at it and he has recommended I contact a qualified pesticide sprayer but I don't really want to use any chemicals on it because of the insects and birds. I have searched for info on it and from what I can gather it's not too big a problem having them on there. It says to use soapy water to remove as much as you can so I will try that although I'm not sure how high up the tree I will be able to reach. Is it ok to just leave them or will they get out of control?