Want this question answered?
Yes?
you can just burn the nest.
If you can get close to the nest, try a pesticide powder. If it is not possible to safely approach the nest, call a pest removal company.
Spray it with hot water, oil, or ant killer.
First of all, bees do not nest under concrete. They are wasps. The area can be sprayed with insecticide or wasp killer bought from a local garden store. A more safer option is to buy a wasp trap. Just add water and hang it up. The wasps get attracted to them and go through small holes in the trap and are unable to come out. They drown eventually.
they have wasp spray, it will dry out the nest. but use it before the weather gets warmer, then remove it and or close in your patio.
First you cover yourself with honey, then you run around your front yard.
Wait for a cool night, at least in the 50's. Get on a ladder with a can or two of wasp spray. Empty the can or cans depending how big the nest is. Then take the foam like insulation and cove the entrance. They will be trapped them in a toxic environment.
To get rid of wasps on a holly bush, you must first find the nest. If they are swarming the bush, the nest will usually be very close by. You can use a commercial wasp killing spray to kill the wasps, but make sure to remove the nest after they are dead or another colony will move in.
If you see the wasps flying around, you should keep an eye on a couple and they might lead you to their nest. Than once you have found the nest spray insecticide on it, or if it is too big or can't be reached, have a professional come and remove it.
The best solution to get rid of wasps is to allow a professional exterminator to do the job. Another solution would be to keep areas clean of food, especially if there is a fruit tree where fruit will begin to fall.
Flamethrower