As beneficial as bees are, a raging nest on your patio will quickly ruin your outdoor experience. Bees are normally passive and prefer to be left alone, but they can go on the defensive if they feel their nest is threatened. Killing bees prior to removing the nest reduces the likelihood of stings and makes removing the empty nest a much safer task.
Suit up with protective clothing before looking for nests around your patio. Heavy jeans, long-sleeved shirts, a beekeeper's hood and heavy gloves reduce the likelihood of stings.
Inspect your patio for nests in the cool air before sunrise or after sunset. Bees are cold-blooded and are much less active and less likely to sting during cool weather. Arm yourself with a flashlight and search along the bottom edges and roof overhangs along the perimeter of your patio, as well as any corners or crevasses that might harbour nests.
Coat the nest with a layer of insecticide designed to kill bees. Soak the nest from top to bottom, making sure to spray all areas of the nest for proper saturation. Let the insecticide soak in for at least 24 hours to penetrate into the hive and kill the queen.
Scrape the nest from the patio with a shovel, and place it inside a metal dustbin. Cover the nest in another layer of insecticide, and cover the can with the lid. Leave the nest in the can for a minimum of 48 hours to kill any remaining bees and larvae, and throw the dead nest out on garbage day.
Read the insecticide label to make sure it is designed to kill bees. Many insecticides are made to kill flying insects and will be ineffective on the nests.
If you're allergic to bee stings, call a professional exterminator to remove nests from your property. Stings can be deadly if not treated promptly.