By John Keegan
This was more about character than the bug invasion itself, which is the preference, from my point of view. The bugs were actually incidental to the main thrust of the episode, which might explain why the resolution of the bug invasion was somewhat lacking. That had to be the fastest midnight-to-dawn transition ever seen. Also, I find it hard to imagine that the spiritual bug swarm, which had previously run amok during daylight hours, would simply disappear with sunlight. Killing humans on the land seemed more to the point of the actual curse, despite the time limit.
Anyway, that didn’t bother me so much, because I was too busy enjoying the tension between Sam and Dean.