How Much Vinegar, Salt And Dishwashing Liquid Do You Need To Kill Weeds?

Question

The weeds are between a flagstone patio and I have dogs.

Answer 1

As much as it takes until the weeds are dead! Vinegar will be sprayed, straight, onto problematic areas. Salt will be sprinkled, lightly, on the area in need. A drop or two of dish soap in water, or in the vinegar will be plenty.

There should not be a need to reapply, unless it rains.

https://www.gardeningknowhow.com/plant-problems/weeds/using-organic-herbicides.htm

https://www.gardeningknowhow.com/special/organic/homemade-pet-friendly-weed-killer.htm