I recently did an inspection at a home and the unfinished part of the basement with plank sub-flooring had what looked to be powder post beetle holes all over. I sub contract to a pest control inspector with over 40 years of experience and he said they were powder post beetles.
The seller got another opinion and his pest inspector said they were evidence of white pocket fungus.
Now, they may want to get a third opinion. Just curious what you think? I’ve attached a picture.