By Brennan
United Kingdom 
I have an apple tree which has aphids, for the last couple of years i have been spraying the tree with detergent which gets rid of them each year but they keep coming back, is there anything i can buy that will get rid of the aphids for good?
4 Jul, 2010
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No - they will always return, and most systemic insecticides (which keep them away for up to 2 weeks) aren't suitable for use on food plants.
7 Jul, 2010