Another very common place to find wasps nesting is in attic spaces.
Getting rid of wasps in attic.
If your wasps have built a nest on the floor of your attic bomb style wasp poisons work very well.
Getting rid of the nest is a bit difficult as compared to a single wasp but if you take the appropriate measures you will surely be successful.
Spray the nest according to the directions on your spray.
Attic is a not so attended place and thus the wasps can live there happily and also make a nest.
You need to locate the nest first.
Fill a shop vac with soapy water then place the head attachment near the source of the insects.
Leave the shop vac on for a few hours to catch as many of them as you can.
Because they are a dangerous pest i would recommend calling the local orkin branch office and asking them to send over a highly trained orkin pest specialist.
Locate the part of the attic where the hornets and wasps are coming and going.
If the nest is a hanging nest make sure you purchase a spray with a projectile shot so that you can completely cover the nest with it.