I sprayed the weeds again. Front and back. I got ambushed out the front by the neighbour. She was lurking on her porch, out of sight until I came down the driveway.
My spraying of three weeks ago had not been as effective as I would have liked. I increased the poison ratio this time.
I will probably need to do another spray in a few weeks to get the ones I missed today. Some of them hide when they hear me coming.