What is one method to treat bee louse infestations?

Freezing honeycomb is an effective method for treating bee louse infestations. The bee louse, a type of parasitic mite, can be detrimental to honey bee colonies. One of the ways to control these pests is by exposing infested honeycomb to sub-zero temperatures, which can kill the lice and their eggs. When honeycomb is frozen, the freezing temperatures compromise the lice's ability to survive, effectively reducing their population within the hive.

The other methods listed do not directly address the infestation issue posed by bee lice. Increased ventilation in the hive may improve overall conditions for bees but does not target bee louse control. Using more queen bees is not a treatment method for lice and may lead to colony instability. Removing brood frames may disrupt the colony dynamics but does not specifically combat the lice infestation. Therefore, freezing honeycomb remains a targeted and practical approach to managing bee louse populations.