We inject a botanical derivative of Neem seeds called Azadirachtin into trees to prevent the spread of Emerald Ash Borer larvae, as well as the larvae of many other insects, on and within trees. We sell no other insecticide -- no bait and switch with bee-killing products. This method has been successful on all our trees that we started on time and that were kept on schedule (generally, every other year treatments). We also employ 7 climbing Certified Arborists, who have worked here for years, and are highly trained in tree pruning.