Wasps really like toothpaste.
This Summer I’ve been getting wasps congregating in my bathroom almost on a daily basis. Never more than 3 or 4, so quite manageable.
I’ve noticed they almost always congregate around the toothpaste tube and seem to feast on any smears they can find.
I usually let them have a good scoff before gently herding them up and putting them out the window.
They’re never any problem. In fact the toothpaste seems to have a very calming effect on them.