Call a bee keeper. Bees are not usually a pest but are valuable for continued preservation of the Earth's survival. Without them we will eventually starve. A bee keeper will capture the queen of the hive and take them to a more acceptable place to live. Extermination will likely do more damage to you than the bees and removal should only be done by someone who knows what they are doing. Bees are only a danger to any person who has an allergy to bee stings and will help your garden to thrive.
Contact a beekeeper first.
Notify a professional beekeeper or bee removal service company.
Sulpher smoke will get rid of them.
If you have a beekeeper in the area, they will come and remove the bees for you. If you can't get in touch with a beekeeper, an exterminator can come out and remove the bees. Honey bees are important to the environment, and shouldn't be killed unless it is a last resort.
You should get rid of the nest because wasps will be atracted to the honey and if there are wasps they probably won't sting you as they are stealing and remove the nest at night as that is when wasps bees and other insects go back to their hives, but be careful.
While honey bees are not as dangerous as hornets or wasps, they can still pose a threat to the untrained person. Hence, it is best to call for pest control to get rid of them.
Mimosa trees attract honey bees and make bad strong- tasting honey. Most bee Keepers try to get rid of any mimosa trees that they find. They are a major enemy if you want good honey!
You light a fire, and put a person on the torches below the bees hive, then they will smoke it out, and you will be able to harvest the honey :D
Having a slightly smoky smell from cooking and grilling non-sweet food outdoors, mowing blades to the shortest height and relocating nectar- and pollen-rich plants to other sites not in conflict with honey bee homes and routes are ways to rid grassy yards of beneficial honey bees.
Best to talk to a beekeeper first and he/she will advise you of the best course of action. Bees can sometimes be removed without resorting to a pest controller.
Empty the fountain, pour bleach, scrub and rinse. The bleach will get rid of any mildew on the fountain.
It will depend on where they are, but it is not a task for the inexperienced. If they are (or you think they may be) honey bees, contact a local beekeeper for help. If they are 'pest bees' -- the local beekeeper can help you identify the animals -- then you may be required to call an exterminator.