At Tree Doctor 911 we never spray any harmful chemicals into the environment. Many companies recommend spray that kills a variety of beneficial insects, even humming birds and nests full of all birds. Those beneficial insects like praying mantis, and lady bugs are killed along with the detrimental insects that are killing the tree. The beneficial insects are usually there in great numbers eating those parasites that are killing the tree. WE ONLY MICRO INJECT WITH 100 PERCENT OF OUR CHEMICAL GOING INTO THE TREE THAT NEEDS IT. it will not harm any beneficial insects on the tree or kill our wonderful organic pollinators the bees.