Rich (Shewie) bought my Blackbird and said he watched them crawl thru the mesh one night, I never noticed them getting thru. Its noseem btw, not mosquito netting. Shewie actually sent midge netting to Brandon to get a special Blackbird made using it. I don't know if he's used it in anger yet. Permethrin is the answer if you have any doubts.
DD's a good hammock, but the Blackbird is just another level, unfortunately price wise as wellI only sold mine on as I make my own bridge hammocks these days.
Hope this helps