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.
How to get rid of wasp nest in roof space.
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.
However if your wasp nest is indoors using water could actually cause more damage to your property.
Make sure you use gloves long sleeved clothes and a protective mask.
It usually easier and better to treat the nest from inside the roof space.
Place the bag over the nest knock the nest off with the scraper and seal the bag.
Providing the nest isn t too far down the eaves you can use a powder insecticide but don t shine your torch directly at nest as wasps may fly towards it.
At the end of the year the queen will produce young queens for the next year.
Here is a story about leaving a nest in a roof.
Spray the nest according to the directions on your spray.
Dont leave a wasp nest in your roof.
The best way of getting rid of wasps naturally and cheaply is to discourage them from establishing nests in your compound.
Also flooding the nest will not get rid of wasps and will only make them more aggressive towards you leading to nasty stings.
They could hibernate in your loft causing you more problems the following year.
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.
Another way of destroying the nest is to squirt dishwashing liquid into the end of your hose pipe and run the water until suds appear.
Plugging the hole will force the remaining members of the colony to seek an alternative exit point.
When treating wasp nests in the eaves of a roof you can safely break into the nest with the duster lance and get wasp killer powder inside the nest but do not try that with a hanging nest unless you are fairly sure it won t fall to the loft floor.
Using water is another common method reguarly used to try and destroy a wasp nest.
If your wasps have built a nest on the floor of your attic bomb style wasp poisons work very well.