Originally Posted by nealtw
Terry's first thought was right, you will never be able to plug all places like that and the house wrap behind the siding should stop bugs.
That is if the installer put the siding on right. I see some really poor siding install jobs when I'm out and about with my job.
Neal is right though, if you've got the house wrap behind the siding, the bugs aren't going anywhere. Also, that is channel that you're pointing out. It simply is the "sliding point" for the siding to fit into. It doesn't go anywhere.