Hornets' nest

Question: I'd like to find out how to get rid of this hornets' nest.  As you can see from the pictures it's under the roof of our dog runs.  It has clearly been there quite a while but has not been a problem till yesterday and we didn't know it was there till then.  But yesterday one of our dogs was stung once and when I went to find out what was going on I saw a large number of hornets, gotstung myself, and saw that both dogs were being stung.
We kennel our three dogs at least once every week or so meaning I need to be rid of this thing soon.  Having the hornets just leave would be ok as well as just destroying it/them. 
If I've not identified the insects correctly please correct that.
Pictures attached.

responder: Andony Melathopoulos, Assistant Professor Pollinator Health Extension Department of Horticulture | Oregon State University 4017 Agricultural and Life Science Building | Corvallis, OR 97331-7304 cell: (541) 452-3038 Andony.Melathopoulos@oregonstate.edu oregon bee atlas | oregon bee project | twitter | facebook | instagram | podcast Replied September 17, 2024, 4:20 PM EDT
response: I am so sorry to hear about your dog. Yes, these nests can build for month before they are noticed.   A few things about yellowjacket biology may be useful here (and yes, the black and white bald-faced "hornets" are just another species of yellowjacket). First, the nests are not perennial, they are annual. In fact, the nest is now reaching its peak population and should begin crashing within a month. The colony should be completely dead by November.   If you cannot avoid the nest until it collapses you will need to kill the nest. Given its height, I would recommend bringing in a pest control professional. To do it yourself would involve climbing a ladder and spraying an insecticide formulated for yellowjacket control into the entrance of the colony (which is the hole at the bottom of the nest). There is a risk that the yellowjackets could fly out at you while on the ladder, causing you to loose balance and fall.   There is a great (out of print) University of Idaho Extension document that goes over your options. You can download it here: https://beav.es/pRT

responder: The Question Asker Replied September 17, 2024, 5:21 PM EDT
response: Dr., Thank you very much for your comments and the link to a fascinating paper from Idaho.  I have a cannister, Spectracide PRO, wasp and hornet killer.  Its active ingredients are .10% tetramethrin; .25% permethrin; and .50% piperonyl butoxide.  It asserts that it has a 20 ft spray reach. We need to use the dog runs, as soon as the end of this week, so I can't wait. My plan is to wait till late twilight or full nightfall and from a reasonable distance spray the entrance of the nest and then the entire nest till it appears wet.   Will the darkness provide me any protection from the hornets? Will one treatment likely be enough? Again, thank you very much for the help. Bill

responder: Andony Melathopoulos, Assistant Professor Pollinator Health Extension Department of Horticulture | Oregon State University 4017 Agricultural and Life Science Building | Corvallis, OR 97331-7304 cell: (541) 452-3038 Andony.Melathopoulos@oregonstate.edu oregon bee atlas | oregon bee project | twitter | facebook | instagram | podcast Replied September 17, 2024, 5:47 PM EDT
response: Hi Bill,   I know, isn't the Idaho publication great?  In my experience an application of a pyrethroid-based insecticide like the one you list should work with a single application. Read the instructions on the label carefully. I am looking at an example of this product label (which may differ from the one you have) and it does warn not being directly under the nest, as you will be dispensing a large volume that could potentially drip back on you. Also note the label specifies watching the wind conditions (although in the enclosed space, the risk of wind may be minimal) as it could cause the spray to drift back onto you. Applying at sunset is recommended on the label and the wasps will be less active (but not totally inactive). Make sure to have a plan to get into cover if the wasps to fly off the nest (i.e., think about where you will go if there are wasps flying around, ideally through a door you can close or into dense shrubbery). It would be prudent as well to let someone else in the household know when you are making the application who you can check-in with. Finally, when done with the application, check the directions on how to dispose of the product after use.   Good luck out there.

responder: The Question Asker Replied September 17, 2024, 6:41 PM EDT
response: Again, Thank you very much – really, really appreciate you info and advice.  Will comply.  I’ll let you know tomorrow how all this went.  Bill From: ask=<personal data hidden> [mailto:ask=<personal data hidden>] On Behalf Of Ask ExtensionSent: Tuesday, September 17, 2024 2:47 PMTo: chenowethSubject: Re: Hornets' nest (#0155079)

responder: The Question Asker Replied September 18, 2024, 10:42 AM EDT
response: Dr., All is well!  I went out at the end of civil twilight, found a couple of hornets flying around, and then sprayed the opening and the entire nest for about 15 seconds.  There was no reaction.  Went back a couple of hours later and sprayed some more.  This morning there absolutely no sign of activity.  My impression is that the nest may have been on its last legs as you said and I just added a nail into its coffin.Thank you again.  This all worked out way easier (and less painfully) than I’d expected.Bill From: ask=<personal data hidden> [mailto:ask=<personal data hidden>] On Behalf Of Ask ExtensionSent: Tuesday, September 17, 2024 2:47 PMTo: chenowethSubject: Re: Hornets' nest (#0155079)

responder: Andony Melathopoulos, Assistant Professor Pollinator Health Extension Department of Horticulture | Oregon State University 4017 Agricultural and Life Science Building | Corvallis, OR 97331-7304 cell: (541) 452-3038 Andony.Melathopoulos@oregonstate.edu oregon bee atlas | oregon bee project | twitter | facebook | instagram | podcast Replied September 18, 2024, 2:53 PM EDT
response: I am so glad this went so smoothly. Fantastic!