What bugs caused this

[Yonak Hawkins]

in my ash lumber ?

339606

..and what is the likelihood they're still active in there ?

These boards were cut last September and have been air drying ever since.

[Dimitrios Fradelakis]

Looks like the work of a Wood Boring Beetle.

This might do the trick but it's kinda pricey:

http://www.domyownpestcontrol.com/boracare-p-100.html

Also look on Ebay for Boracare, I just saw a gallon for sale for $62.99 with free shipping.

[Danny Hamsley]

Yonak,

Does not look good. Looks like two different beetles, the smaller holes look to be powderpost beetle. It is best to use heat to kill them.

[Pat Barry]

We have issues here with Emerald Ash Borer bugs killing all of our Ash trees. Its really become an epidemic. According to the State of Minnesota its unlawful to transport trees / firewood that could possibly be infected with these little monsters

[Yonak Hawkins]

Thank you. I recognize the powderpost beetle holes. What about the other channels ? Do you recognize them ? Could those bugs still be there ?

[Joe Cowan]

The Old House Borer takes two years to mature and exit the wood. If it was green wood, air dried, it could be the exit hole of this bug.

[Cody Colston]

Could those bugs still be there ?

Yes. Eggs or larvae from the bugs that made the exit holes could still be in the lumber. It needs to be sterilized in a kiln.

[Yonak Hawkins]

Thank you, Cody. I was under the impression only powderpost beetles could survive as long without a source of water.

[Danny Hamsley]

The large holes look to be flathead borers. Could also be long horned beetle.

[Yonak Hawkins]

Thank you, Danny. This gives me a starting point to do some research.