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When to spray pesticides in summer is most suitable
Spraying pesticides during the summer is most effective when done between 8 and 10 a.m., and again around 5 p.m. This timing is ideal because by 9 a.m., the morning dew has usually dried, and the temperature is moderate. At this time, pests are most active—they are feeding, mating, and moving around, making it the perfect window for pesticide application. Spraying at this hour ensures that the pesticide isn’t washed away by dew or diluted by moisture, which could reduce its effectiveness. Additionally, the lower temperature prevents the chemical from breaking down too quickly, preserving its potency.
In the late afternoon, around 5 p.m., the sun begins to set, and many nocturnal pests become more active. They start feeding and mating, which makes this another optimal time for spraying. As a result, the pesticide can be more effectively absorbed by the pests, increasing its overall effectiveness.
However, it’s important to avoid spraying during midday, typically between 11 a.m. and 2 p.m. The intense heat and strong sunlight cause some pests to hide or become inactive, reducing the impact of the treatment. Moreover, high temperatures can cause the pesticide to break down faster, decreasing its effectiveness. The chemicals may also evaporate quickly, leading to potential harm to humans and animals through inhalation or exposure.
According to China Pesticide Network, choosing the right time for spraying not only improves pest control but also helps protect both the environment and human health. Always follow safety guidelines and choose times when the weather is mild and the pests are most vulnerable. This approach ensures better results while minimizing risks.