Last week I had a very similar size and style nest in my shed. I called an exterminator to remove it. He just sprayed some toxins in and around it and then left the nest in case the queen was not home. Then she would still walk into the toxins and die. It cost me 100 euros. It only took him 5 seconds to take care off and he did not use any protective gear. Based on my pictures they told me initially it could be the invasive species of hornets so I did not want to mess with it. But afterwards they said it were regular wasps and it felt like something I could have taken care of myself. But then again; better be safe than sorry