The best way of getting rid of wasps naturally and cheaply is to discourage them from establishing nests in your compound.
How to get rid of wasp nest in roof space.
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.
Place the bag over the nest knock the nest off with the scraper and seal the bag.
Make sure you use gloves long sleeved clothes and a protective mask.
At the end of the year the queen will produce young queens for the next year.
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.
They could hibernate in your loft causing you more problems the following year.
Dont leave a wasp nest in your roof.
Plugging the hole will force the remaining members of the colony to seek an alternative exit point.
Spray the nest according to the directions on your spray.
Using water is another common method reguarly used to try and destroy a wasp 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.
If your wasps have built a nest on the floor of your attic bomb style wasp poisons work very well.
Here is a story about leaving a nest in a roof.
This is a bit tricky as if possible keep the loft light off using a torch to locate the 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.
However if your wasp nest is indoors using water could actually cause more damage to your property.
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.
It usually easier and better to treat the nest from inside the roof space.
Also flooding the nest will not get rid of wasps and will only make them more aggressive towards you leading to nasty stings.