What does it signify if a pesticide has high efficacy?

High efficacy in the context of pesticides specifically refers to the ability of the pesticide to effectively control the target organisms it is intended to manage. This means that a highly effective pesticide can significantly reduce or eliminate the population of pests, such as weeds, insects, or diseases, leading to a successful outcome for the user.

While safety in residential areas, application rates, and weather conditions are relevant factors when considering pesticide use, they do not directly define the concept of efficacy. Efficacy focuses solely on the effectiveness of the product in achieving its intended purpose against specific pests or problems, reinforcing the importance of selecting products that deliver the desired level of pest control.