What could be a common consequence of failing to follow pesticide label instructions?

Failing to follow pesticide label instructions can significantly increase the risk of environmental damage. Pesticides are formulated with specific application rates, timing, and methods in mind to ensure both effective pest control and minimize adverse impacts on the surrounding ecosystem. When these instructions are disregarded, it could lead to increased runoff into water bodies, harming aquatic life, or negatively impacting non-target species, including beneficial insects and plants. This non-compliance can also result in pesticide resistance in pests, necessitating the use of more harmful chemicals in the future. Overall, adhering to pesticide label instructions is vital for protecting both the environment and public health.

The other options suggest outcomes that would not generally occur as a result of ignoring label instructions. More efficient chemical use, faster aircraft performance, and improved crop health are not realistic consequences of failing to follow guidelines, as improper application usually leads to detrimental effects rather than improvements.