I use vegetable oil. Put some in one of those bottles with a pinty nozzle and drizzle it down cracks in the driveway, sidewalk or pour some on a weed.
Better still was when I would use used dirty food oil.
Boiling water works for the short term by cooking the weeds to death, but something will come up later on.
Once you get rid of them, spread some Preen preventative to keep them out. That stuff works.
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Don't blame me. I didn't vote for either of'em.
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