Which method is least effective for deterring bears from beehives?

Providing distractions is considered the least effective method for deterring bears from beehives because, while it may momentarily divert a bear's attention away from the hives, it does not address the bear's natural instincts and behavior. Bears are opportunistic foragers, and their primary motivation is to seek food. Distractions may not be sufficient to prevent bears from approaching the hives if they can smell or sense the honey and bees inside.

On the other hand, electric fencing serves as a strong physical barrier that can effectively prevent bears from accessing beehives, as bears are deterred by the shock. Motion-sensor lights can startle bears, thereby reducing their inclination to approach the area, and the use of guard dogs can provide a proactive defense by barking and potentially confronting the bears. These methods are more focused on keeping bears away from the hives by either discouraging their approach directly or using guardianship tactics rather than merely distracting them, which is less reliable in the long-term protection of beehives.