I agree that these bugs are real nuisance even for Commercial Mailboxes. I remember when I was spraying a mailbox of a bank branch I found a hive of honeybees.

Moved from Walkingsticks.

I'm not certain which species it is, the records are all mixed up for the two. Some say the Two-striped (the larger of the two) is just in peninsular Florida with a tiny bit of overlap into adjacent states to the north. Others have it all over the southeast.

Anyway, just thought I'd add a quick comment. They really are basically harmless, nothing to be alarmed about. The fluid they release is an irritant, perhaps a bit of stinging (not "great pain") if it hits eyes, and causing basically a hay-fever type reaction with irritated watery eyes, perhaps a stuffy runny nose, for a while. No big deal, just a little unpleasant. As far as I know, it doesn't cause a reaction on skin (certainly none on my skin). No worse than rubbing any of those million other things into our eyes off of our hands when we were kids, really little worse than a bit of grasshopper "tobacco juice". Akin to the vapor some beetles release. It is just their way of saying "leave me alone!"

Of course sometimes one person's "great pain" is a "minor itch" to another.

These critters are definitely a novelty, and they are actually a lot of fun to watch. They even make fairly good pets!

A note of caution though. Even though I think these are really cool, and I think reports of pain and "temporary blindness" are likely exagerated, they should not be totally ignored. So, don't stick your face up next to one of these on purpose. Also, it is perhaps possible that somebody could have a real allergic reaction to one, and that might be different.