I have a twenty-old-log home, not sure when it was last treated for insects. Pressure washed then applied wood guard with UV stain treatment 2 wks ago. Now noticing small, flying ‘bee-looking’ insect going in/out of holes that were already there. Haven’t noticed any new holes. These bugs are very small, about 4-6mm long with yellow and black striped abdomen. Are these parasitic insects or did they make the hole? They aren’t carpenter bees because they are very tiny. What would you suggest fo