Quote:
Originally Posted by berttrim
Make sure that there are no bushes, grass, plants, or other (alive) things that you want to keep in the vicinity of the SALT.
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Used in sufficient quantity, salt is an effective weedkiller. But it is also a long-term contaminant, and in general I would beware of using weedkillers that can act as long-term contaminants, unless you are wanting to pave the area afterwards.
Going back to OP's original post, actually it would be a much clever trick to kill something temporarily.