It's a bit more complicated than grabbing a bottle of "weed killer" and spraying the yard.
WARNING: If something will kill "weeds", it might also kill "flowers", "lawns", "vegetables", "shrubs", "trees", "animals", and you.
Read the labels before you buy a product or open the container. Follow the instructions. What has been sprayed can't be unsprayed.As I complete the posts, I'll update this, or click on the tag "herbicide" to see them and any other posts on herbicides.