When it comes to killing bee hives, the first thing you should decide is if you really want to kill the bees. Bees pollinate flowers and are a great help to our environment. With that in mind, you might want to consider having the bee hive removed to another area by a beekeeper. You can kill and prevent bee hives yourself by correctly following some basic steps and precautions.
Put on protective clothing. Wear leather gloves and a beekeeper's veil.
Set off a a bee smoker during the early morning or right before dark. A bee smoker emits fumes that calm bees and makes them less likely to sting. Bees are least active in the early morning and right before sundown. An added bonus of killing bees at these times is they are nearly all in the hive.
Spray an insecticide into the hive. Spray as much as the hive as possible. Repeat the spraying application several times.
Place the hive in a garbage bag. Secure the bag tightly. Place bag in a garbage can with a lid.
Bring in a professional to kill and remove the bee hive. This is particularly recommended for people who are allergic to bee stings. When a hive is in a location that's hard to reach, hiring a professional is also the best way to go. You don't want to be standing well above the ground on a ladder and get attacked by bees. And if you just want to get rid of the bees and not kill them, then a beekeeper is definitely the person for the job.
Remove and dispose of any existing hives as described above in Section 1.
Scrub the area thoroughly with soap and water.
Look for any areas around (or near) your house where bees may form a hive. This includes cracks in your house or nearby structures. Bees also like to form hives under eaves and in openings of outdoor furniture. There's really no way to prevent bee hives in items like bushes unless you remove the bushes.
Fill in any cracks on your house, or other nearby structures, with a sealant. Place screens over vents and gutter downspouts.