Killing bees is a bit of a risky task. Many people just swat down a nest with a broom or stick. All this will do is agitate bees and you will get stung. Another bad idea is to spray a nestduring the day. Bees are active during the day and many are away from the nest. Spraying the nest will only kill a few bees. So what you need to do is way for night. Bees are resting at this time so you will kill more bees with a spray. You will also be less likely to be stung.