When is it necessary to wear protective clothing when dealing with pesticides?

It is essential to wear protective clothing when dealing with pesticides at all times because these substances can pose significant health risks during handling and application. Protective clothing serves as a barrier to prevent skin contact with pesticides, which can lead to absorption and potential poisoning. Pesticides can vary in toxicity and form, and even minimal exposure during application, mixing, or filling can be harmful.

Using protective gear consistently ensures that applicators reduce their risk of exposure to potentially harmful chemicals, regardless of the specific activity being performed. This precautionary approach is critical, as conditions, such as environmental factors, can change and impact how pesticides behave and the level of risk they present. Proper protective clothing includes items such as gloves, long-sleeved shirts, pants, and, when necessary, respiratory equipment, according to the type of pesticide being used and the manufacturer's instructions.

The other options suggest limited circumstances where protective clothing is necessary, which increases the risk of exposure during other times of handling pesticides. Therefore, adopting a policy of always wearing protective clothing is the safest and most responsible approach for pesticide handling.