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2. Salt in Homemade Weed Killers

Salt is a popular weed-killer ingredient because it is a stronger desiccant than acetic acid. Rock salt or water softener salt works best in vinegar-based weed killers. Salt draws moisture from plants, but it has no impact on roots. Use only small amounts of salt in homemade weed killers. Large amounts of salt linger in the soil and kill anything planted in the area.

water softener, rock salt, small PeopleImages / Getty Images
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