Wasps usually make nests in air vents, lofts, roofs, in the eaves and under flat roofs, if you see wasps flying in and out of particular hole on a regular basis, it is likely you have a wasp’s nest.
You should not attempt to treat a wasp’s nests by yourself as it is likely to be difficult and potentially dangerous. On no account should you remove a nest from a roof space, this should be carried out by a professional pest controller.
If you think you have a problem with wasps you should contact 24 Hour Pest Control who will deal with your problem immediately