As noted previously the easiest way to avoid bees and wasps from building hives within your furnace or ventilation system is to use the appropriate vent screen s for the season.
How to get rid of wasp nest in roof vent.
Non poisonous method to get rid of a wasps nest in a roof you can use a garbage bag inside a landing net and a long handled scraper to remove the nest from the roof where it is attached.
Place the bag over the nest knock the nest off with the scraper and seal the bag.
Wear a breathing mask and follow all instructions on the package to prevent inhalation.
Step 1 spray an insecticide into the vent to kill any wasps that are currently in the vent.
Apply the wasp killer as directed standing as far away as is practical and be generous.
Most residential dwellings with pvc intake exhaust vents utilize either 2 or 3 pvc termination hubs.
The jam and the vinegar will attract the wasps and when they get in they won t be able to get out.
Just mix two tablespoons of dish soap like the dawn dishwashing liquid soap with three to four cups of water and place the mixture into a spray bottle.
An empty spray bottle.
Some of the wasps will drop into the water and drown but some can survive and for this reason you should kill them as you empty the bottle.
It can help you get rid of wasps without the need to use any chemical toxins.
To get rid of wasp s nest wear protective clothing approach the nest at night when the wasps are less active and thoroughly douse the nest in an approved pesticide spray insecticidal dust smoke or water.
Getting rid of wasps in roof vents requires diligence to make sure they don t return.
Keep spraying the nest until the water completely soaks and destroys it.
Use water or wasp killer if the nest is in the eaves and visible from the outside after you remove the soffit you may be able to spray the nest with water.
A pressure washer may damage your roof.
This is another very effective natural remedy.