Which precautions will you take during spraying of pesticides?

Explanation

i. During spraying pesticides, all the people in the exposed area should cover their hands, mouth and face. to avoid exposure to harmful chemicals.
ii. Excess use of pesticides should be avoided, in order to prevent its entry into the food-web and water resources, thus preventing biomagnification of these toxic compounds.
iii. Use of less harmful or organic pesticides should be encouraged to reduce the level of toxicity.
iv. To reduce environmental pollution, chemical pesticides should be sprayed specifically only when required.