It started three years ago: aphids infestation. I used soapy solution, Safer, End All. I bought lady bugs (two bags) and released them in the garden (watered everything prior, etc). I had a company do a deep root fertilizing on all my trees and bushes, I put mulch around them to keep moisture in. Nothing worked. There were so many aphids that I could not see the back of the leaves: they were covered solid in black aphids (cherry tree, apple tree, nasturtiums) or green aphids (plum tree, roses, viburnum). Last year I had aphids on the chive and the yucca plant. I stopped planting nasturtiums even though I love them. I hoped that this past winter killed the aphids eggs - no such luck: the aphids are back and I am getting desperate. I read about aphidoletes as natural predators and would like to try but I can not find a place to buy from. Does anybody know where I can buy aphidoletes? I am a step away from resorting to nasty chemicals. Thank you.