It didn't work for me at all.
Please be aware using boiling water may also kill nearby roots of grass or flowers because it absorbs into the ground.
This does not work. I followed the directions perfectly. I am glad I didn't pay for this info.
worked great and i wasnt worried about using it since i have an18mo old daughter, so no toxics! i dont know that i would feel comfortable using battery acid as the other reviewer mentioned. this is safe and effective.
I tried this because it didn't contain harsh chemicals. I used it on a small part of gravel driveway and a few days later the weeds were dried up. Now I have to mix up some more for the rest of it.