That is handsome tax!
They seem to come in the house in August, I think looking for water, because it is hot and dry then. The vinegar seems to be helping. I know that cinnamon repels them, but I have read that it is also bad for the chickens and it is expensive.
They are a horrible insect. I got stung between my fore finger and middle finger in that tender spot, my hand was swollen to my ring finger, I had to take my ring off with some hand lotion. I have checked the little chicken feet and they look ok, but Blue was a grump today so I checked him all over with my flashlight tonight and he doesn't have any signs of stings under his feathers and seemed more annoyed that he was actually enjoying the attention. LOL