Which statement about the protection of bees from pesticide applications is false?

The statement that bee hives should be left unsealed is false because sealing bee hives, especially during pesticide applications, is a protective measure recommended to prevent bees from being exposed to harmful chemicals. When hives are sealed, it can help ensure that bees remain inside and are less likely to come into contact with pesticides in their environment. This is crucial since exposure to pesticides can harm bee populations, which are vital for pollination and biodiversity.

In contrast, the other statements are established practices aimed at minimizing pesticide exposure to bees. Spraying at dawn or dusk when bees are less active helps reduce the risk of direct contact with the pesticide. Avoiding pesticide applications during flowering periods is also important, as this is when bees are foraging, increasing their exposure to harmful chemicals. Additionally, sealing hives is a proactive strategy, ensuring that the bees are shielded from potential pesticide drift and contamination during treatments nearby.