I built my Heritage home about 11 years ago. I have 8” round pine logs. Within the last 2 years I have been noticing very small 1/4 inch or less, bee/wasp looking critters( some black, some black and yellow) coming in and out of small very rounded holes, I see frass in some cases on my deck. My exterminator is clueless. I have found they look like Horned tailed wasps, which they say can bore into wood, cause no structural damage but the holes are unsightly. 4 years ago I power washed the logs an