Duncan's device is a bit expensive (interestingly up by about 50% since he posted it in 2012, but good memory Duncan!) and the reviews suggest it is only patchy in it's efficaciousness. And there is no Amazon here in Portugal - served from Spain apparently
So I suppose a water pistol should be easy and cheap enough to obtain, though I don't weally want to be walking round with a loaded sper soaker - do you mean just an ordinary hand sized water pistol?
Think I may get myself a telescopic walking pole too, there were some in the local pound (Euro) shop.Could be useful for many things.
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