When is it most appropriate to use a non-selective herbicide?

Using a non-selective herbicide is most appropriate in situations where bare ground is desired. Non-selective herbicides kill all types of vegetation they come into contact with, which makes them effective for clearing areas of unwanted plants, including both weeds and desirable plants. This can be particularly useful in landscaping or construction scenarios where a clean slate is necessary before further work can proceed.

In contrast, using such a herbicide in established lawns or as a preventative measure could result in damage to the desired grass. Similarly, using it to encourage plant growth contradicts the intended use of a non-selective herbicide, as its action would eliminate competing plants rather than promote growth. Thus, the correct application is in contexts where the goal is to achieve bare ground.