If there is an underground nest you may be able to pour gasoline into the hole when it is dark and they are asleep but DO NOT light it as it will cause problems. It is the fumes that will kill them.
spray them with water
The best way it get rid of gal wasps is to spray areas where they are known to exist with pesticide. Sticky traps can also help trap the adults and thus prevent them from breeding.
No, it has no effect on them. That is an old wives tale.
Ichneumon wasps are highly specific parasitoid wasps. They will often have one specific target prey. Observe them and try to find out what they are after. Perhaps beetle grubs in your trees? If you get rid of their prey, you get rid of them as well.
The wasps will eventually go away on their own as they are a random event in the game. You can also use the wasps if you run out of food to make noni appear.
no, not permentally
yea
You can spray wasp spray into a wood pile to get rid of the wasps. You can also smoke them out.
You should get rid of the nest because wasps will be atracted to the honey and if there are wasps they probably won't sting you as they are stealing and remove the nest at night as that is when wasps bees and other insects go back to their hives, but be careful.
You swat them with a plastic fly swatter and then you chuck it out the window
To get rid of digger wasps, you will need to locate the holes or nests they have made. Then you can pour one cup of ammonia in each nest, every day for a week, until they stop building new nests.
Not permanently, No.