Purchase an aerosol bee and wasp spray to eliminate the bees prior to removal.
Dress appropriately to prevent bee stings. Cover your head with a hat, put on heavy jeans, a long-sleeve shirt with a high collar, gloves, socks and boots. Cover your face with a bee veil or a facial mask.
Wait until the evening when there is less bee activity and the adult bees are inside the nest. Go up to your attic to confirm the exact location of the beehive.
Check for any cracks or holes in the attic that might lead into occupied rooms or into the walls of your home. Seal them off using caulk or insulation, or by boarding them over with wood. Place a fine mesh or netting over attic vents.
Spray the aerosol spray directly into the main entrance and exit of the beehive for the amount of time directed on the package. Retreat from the attack as quickly as possible.
Listen and observe any continued bee activity. Repeat the application after waiting the recommended amount of time as instructed on the insecticide can.
Remove the hive and the dead bees. Because insecticide was sprayed on the hive, do not attempt to eat the honey, which is now poisonous. Dig a hole that is at minimum 18 inches deep. Bury the honeycomb as well as the bees, covering them completely as you replace the dirt from the hole.
Wash the hive area with soapy water to help remove any leftover odor that may attract other bees to set up a nest. Paint over the surface if desired to ensure that no further bees are attracted to the area.