Would it kill the tree?Tilt the tree so the hollow is on top. Then carfully (!) pour rubbing alcohol in there. The maggot will come crawling out in a second.
Why would you treat a pest with a fungicide?
Get a piece of wire, wrap it with some cotton, dipped in your favorite insecticide, and shove it in as far as you can get it.
Not if you only pour it in the hole and don't drench the roots. I got one out with it this summer.Would it kill the tree?
Well, while I was using your method, I was able to dig one out with a wire ..Not if you only pour it in the hole and don't drench the roots. I got one out with it this summer.