I have the same problem with a beautiful piece of Big Leaf Maple Burl. Posted here a couple of weeks age.
Here is what I am trying. I turned the burl upside down and put a chalk line to divide it in half. With an eye dropper and later with a hypodermic needle I placed lacquer thinner in the holes in one half and DNA in the other. This approach came from several posts here on WC. I let is sit bottom side up for a bit and then turned it over and placed it on a black plastic bag on my bench. After the first dose, I noted substantially fewer mounds and it didn't seem to be better or worse on one side or the other.
I have continued until this morning I had only one pile. I plan to get that one little critter and then pit it in an out of the way place on plastic for a couple of weeks to make sure no egg have hatched.
It seems to be working and planned to post here the results when completed