Common Tansy

Last year I learned that flies don't like tansy (German: Rainfarn).
I've had a few stubborn flies at home and went tansy picking.
A very short walk after a short car drive; I'm not in holiday mode or mood yet.
There were no flies in the car - and I could definitely smell the tansy.
Now what do the flies at home think?

20:00; 19°C