I am testing the three most popular all natural weed killers from the internet.
Many people swear by these.
I will say that the methods did kill the grass to a certain extent.
Although it’s a good thing to want to use natural methods to kill weeds, we have to remember that if we kill weeds, we are also killing natural microbes and fungi in the soil and that will inhibit growth of vegetables and flowers.

Now if you’re doing this on a sidewalk or somewhere you never plan on growing anything then this could work.
But my suggestion is to use cardboard.
It will not only smother the weeds, but as it breaks down, it will add nutrients to the soil.