What problems can arise from purchasing more pesticide than needed?

Purchasing more pesticide than needed can lead to a reduction in pesticide effectiveness during storage. This issue primarily arises because pesticides can degrade over time due to exposure to light, heat, and moisture. When pesticides are stored for extended periods, their chemical composition can change, potentially rendering them less effective when applied.

Over time, factors such as temperature fluctuations and improper storage conditions can cause pesticides to break down or lose potency, which might not happen if they were used within their recommended timeframe. Additionally, repeated exposure to environmental conditions can lead to degradation products that could have unintended consequences when the pesticide is eventually used.

While aspects like excessive advertising costs, a decrease in safety, or increased popularity might be considerations for other facets of pesticide management, they do not directly relate to the inherent effectiveness and viability of the pesticide as it ages in storage. Thus, the primary concern with purchasing excessive quantities of pesticides is the risk associated with their efficacy over time.