What is it in this

What is it in this office that is attractive to hornets? Remember last year? Well, I was just sitting here typing when I noticed a pair of antennae moving on the corner of my keyboard. I leant over and saw a large queen hornet crawling up the side of my keyboard, decided to beat a hasty retreat and fetched a jar and card. With help from mum, we captured it and released it on a pile of logs on the nursery – hopefully a nest will be built there.
They are seriously amazing creatures, but I wouldn’t want to be stung by one!