Will *this* work to rid yard of this grassy weed?

[Hell Hath No Fury]

7. Don't think that would work.

Most weed killers work via the foliage only.

If you are going to "spot spray", then go ahead and do it with a vinegar/salt/dish washing liquid solution.

At my Mom's house, she has a rental unit next to her that is vacant -- the yard is a mass of dandelions that migrate to her yard. I spent last year hand deadheading the neighboring weeds before the seeds had a chance to fully develop, then hitting the greenery with a good shot of the solution. This year, so far, the yard is almost clear of weeds. I think some minor maintenance deadheading and spraying will be all I'll need to do from here on in.