Why should you avoid using cotton or leather gloves when handling highly toxic pesticides?

When handling highly toxic pesticides, it is crucial to consider the protective qualities of gloves. Cotton and leather gloves are porous materials; they can absorb chemicals. This absorption can lead to pesticide residues being retained in the gloves, bringing them into close contact with the skin during use. This poses a significant risk of dermal exposure to toxic substances, which can easily be absorbed through the skin and lead to serious health consequences.

In contrast, gloves designed for pesticide handling typically are made from materials that provide a barrier resistant to chemical penetration, ensuring that the handler's skin remains protected from harmful substances. Thus, utilizing gloves that do not absorb pesticides is essential for safe pesticide application.

While other options might highlight different aspects, they do not directly address the critical safety concern of skin exposure and absorption that makes using cotton or leather gloves particularly dangerous in this context.