I have 511 Hemlocks infested with HWA to be treated. I have done several HWA treatments before by soil drench or spraying. The problem with these trees is they are right beside a waterway so that eliminates my usual methods of treatments and only leaves me to inject them. I think I have pretty much decided on the Wedgle but I can't find any purchase info. or pricing on them. If someone could tell me how much they are selling for and where I can get one ASAP that would be great. Thanks.