If you’re fact-checking “How to make a super effective homemade herbicide,” the common DIY recipes are usually based on vinegar, salt, and dish soap. They can kill or damage weeds, but they’re not a magic permanent solution.
A safer approach
For weeds in driveways, sidewalks, and other areas where you don’t want plants, ordinary household vinegar can damage the foliage it contacts. A small amount of dish soap is sometimes added to help the liquid spread over leaves.
However, avoid adding salt if you care about the soil. Salt can accumulate and damage desirable plants and make soil difficult to grow in.
Also:
Don’t spray on lawns or near plants you want to keep.
Avoid windy conditions to prevent drift.
Don’t assume vinegar will kill established perennial weeds; it may only burn the leaves while the roots survive.
For garden beds, hand-pulling, mulching, and dense ground cover are generally better long-term strategies.
Bottom line: A homemade vinegar-based spray can provide short-term control of small weeds, but there is no homemade recipe that reliably kills every weed “forever.” For persistent weeds, controlling the roots and preventing new seedlings is much more effective.
