chainsaw

ken

ps: bayer tree and shrub is labeled for such.. but very quickly became cost prohibitive with my lot size.. and the number of trees... luckily.. they were within the capability of me and my chainsaw.. so removal was fast and sweet ...

Imidacloprid applied as a systemic drench around the roots is the standard recommendation. Bayer Tree and Shrub is one brand and usually the most expensive by far. Bonide and Fertilome also offer the product at about half the cost of the Bayer. There are others which are even cheaper, but the dilution rates would be difficult for a casual user because of the very large quantities involved.

Then there's the question of imidalcoprid's safety. It has been banned in Europe because of concern over its role in Colony Collapse Disorder in honeybees. A drench is much safer than spraying, but anyone choosing to use it ought to be aware of the issues.