The answer to 'how to kill bee' is to call a professional pest control technician. Bees are important pollinators and should not be killed unless absolutely necessary. Killing bees yourself can be dangerous and may violate local laws. A professional pest control technician has the proper training, equipment, and expertise to safely remove a bee nest or swarm without harming the bees if possible.
If you do need to remove a bee nest or swarm on your own, it's crucial to take safety precautions. Wear protective clothing like a bee suit, gloves, and goggles. Avoid using insecticides or pesticides, as these can be harmful to the environment. Instead, use a bee vacuum or other humane removal method to relocate the bees to a safer location. However, it's generally best to leave bee removal to the professionals.