You can get rid of a hornets nest by using an insecticide that targets hornets and wasps. Ensure that you cover yourself fully; from head to toe before approaching the nest. Hornets are sluggish and less aggressive at night, so it is better you start the removal work at night. Place a flashlight nearby so that you will be able to see what you are doing; note that some hornets may escape flying towards the light. After spraying the nest entrance, use a shovelful to block it to keep the hornets from escaping. Now you have all the time to destroy the remaining nests. Visit http://www.howtogetridofstuff.com/pest-control/how-to-get-rid-of-hornets/2/ for more details.