When the water has pressure and is soapy it will blast the nest.
How to get rid of wasp nest in roof space.
If your wasps have built a nest on the floor of your attic bomb style wasp poisons work very well.
Make sure you use gloves long sleeved clothes and a protective mask.
This is a bit tricky as if possible keep the loft light off using a torch to locate the nest.
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.
Liquid wasp killer is inadequate to kill a wasp nest in a wall as it won t be able to penetrate deep enough to kill all the wasps.
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.
Spray the nest according to the directions on your spray.
They could hibernate in your loft causing you more problems the following year.
Using water is another common method reguarly used to try and destroy a wasp nest.
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.
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.
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.
Place the bag over the nest knock the nest off with the scraper and seal the bag.
Here is a story about leaving a nest in a roof.
Also flooding the nest will not get rid of wasps and will only make them more aggressive towards you leading to nasty stings.
Plugging the hole will force the remaining members of the colony to seek an alternative exit point.
At the end of the year the queen will produce young queens for the next year.
The best way of getting rid of wasps naturally and cheaply is to discourage them from establishing nests in your compound.
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.