I got my gardening magazine from Hillier and they are advertising something called a WASPINATOR.
Quite simply put the Waspinator is the worlds most innovative & environmentally friendly way to deter wasps from around your home and garden.
Unlike conventional traps, there are no sticky substances or chemicals used, making it much better for the environment. As there is no need to kill wasps there will be no alarm scent released which is known to attract other wasps.
The Waspinator utilises the wasp's natural instincts to deter them from your eating area. Wasps are extremely territorial and if they see or sense an enemy nest then they will simply fly away. And that is exactly what the waspinator does - it makes wasps believe they are in other wasp territory by mimicking the shape and colour of a wasp nest.
Simply hang it in the area you are, and working like a scarecrow does in a field, you will enjoy wasp free days and nights without any embarrassing arm flapping incidents.
Compact, easy to use and move, environmentally friendly and weatherproof, the Waspinator is a safe, clean and effective wasp deterrent.
I copied and pasted that from wasp-away.co.uk
but you can get them from Amazon and, obviously, Hillier Garden Centre. I haven't posted this as a deal because you may be able to get these cheaper than the £9.99 for 2 at Hilliers. But I think they are a good idea if yout bothered by wasps.