Yes, I think this is the max time of the year for hornets. I try to keep spray cans close by so that I can hit them in the air as they are finding their way toward the siding and their nests inside.

Mud dauber’s are very docile rarely sting. Not like the pit bull cousin’s the yellow jacket. If have any bushes that you have tampered with in while be careful. I watch my bushes see it any yellow jackets are going in them. Yellow jacket look for any excuses to attack and sting.

You could just seal crack off with clear silicone so they can’t get in.

Hornets? More like wasps or mud daubers. Hornets commonly nest in ground. Or make big football looking paper nests? Wasps make the round honeycomb flat looking nest except the mud dauber makes mud hut you see in your garage or front porch stuck to wall or something. My car sets in garage lot, had window down for week and mud dauber made nest on my back seat at top. I kept seeing fine dirt on seat noticed it when I looked up.

Probably yellowjackets.


“ Yellowjackets are more aggressive than other stinging insects such as wasps, hornets, mud daubers or bees. Yellowjackets can both sting and bite -- they will often bite to get a better grip to jab their stinger in. Since they don't lose their stinger, they can sting numerous times, and will do so unprovoked. “

I understand CJDR dealers are also struggling to get rid of their Hornet problem.

Urgent, call a bee removal company. They remove the nest & give you a 1 yr protection policy, which means the company will return if the wasps return. My neighbor sprayed one end of the nest. The bees kept building onto the other end. The nest was 5ft long. They also must check inside the attic.

" How many mud daubers per nest?
Mud Daubers
one individual
Typically there is only one individual in each nest or burrow. If the nest is constructed of mud, this is one of several species of mud dauber. Mud daubers are solitary wasps that construct small nests of mud on the sides of buildings, rafters of open structures, bridges and similar sites. “

OP said they were mud dauber’s very different from bees.

“ bee?
Bees tend to be 'hairy' to allow pollen to be gathered more easily whilst wasps tend to be bald and shiny in appearance. Honey bees are social insects and live in a nest which may contain several thousand workers. Unlike wasps and bumble bees, the honey bee's nest survives for many years. “

That’s going to be problem, those hornets have no sting. Who wants rebadged fiat? :22yikes:

Ohiobuckeye
 

Rocksnap is correct, if you’re afraid of getting stung do it at night or pay someone to do it for you.

They are most likely just Mud Bugs not Hornets…. Easy to spray and get rid of them.

Had pest control to take out a Wasp nest in my house roof here in UK a couple of hours ago.
Without protective gear, no way will I tackle the little £%$^&!$.
Operative wore the appropriate protection while pumping in the powder, and boy, were the buzzers peed off!

I have always had a yearly contract with an exterminator. In my experience preventing or getting to a problem early with insects is so important. Especially in Florida. Would highly recommend you call a professional.

right? Hornets don’t bite they nasty sting. OP said they were mud daubers which only build solitary single nest for larva.

How much mud can a mud dauber daub when a mud dauber does daub mud?

Question. Regardless of what kind of bugs they are, do you really want to (hopefully) seal them inside the wall?