"This weed killer is non-discriminatory....it kills what it is sprayed on, so be careful where you spray it. The good thing about this is that it is easy to make and very economical. Make sure you label it and store it out of the hands of inquisitive children. If you spray this multiple times in the same spot, nothing will grow there for a very long time....perfect for cracks in your driveway and in sidewalks...."