Also flooding the nest will not get rid of wasps and will only make them more aggressive towards you leading to nasty stings.
How to remove wasp nest from roof.
It is possible to drown a free hanging aerial wasp nest using a cloth bag and a bucket of water.
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.
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.
Wearing your protective clothing set a bucket of water beneath the wasps nest.
Be sure to use the high velocity setting on the hose s nozzle.
Cover your wasp nest with the spray during.
Place the bag over the nest knock the nest off with the scraper and seal the bag.
Then stand around 15 feet away from the nest and use a good powdered insecticide with a view to blocking the exit point carefully.
Grab a large cloth bag with no holes or tears.
Just put a small fire close by bbq or any other lit material beneath the nest.
A pressure washer may damage your roof.
Apply the wasp killer as directed standing as far away as is practical and be generous.
However if your wasp nest is indoors using water could actually cause more damage to your property.
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.
When the water has pressure and is soapy it will blast the nest.
Using a hose pipe or water using water is another common method reguarly used to try and destroy a wasp nest.
The other method is to smoke the nest.
Keep spraying the nest until the water completely soaks and destroys it.
Diy wasp nest removal advice destroying a wasp nest in a bush or shrub if you are dealing with a nest located in a shrub or bush watch and spot the entry and exist points of the wasps first.