As part of his new series exploring the hidden world of surveillance, Richard Bilton goes on Operation Scooby Doo with Rocky, an undercover four-legged council spy, looking for dog walkers who allow their dogs to poop - but fail to scoop.
The government says this kind of covert operation is no longer justified, but the Wyre council, in Lancashire claims it is was doing what their residents want.
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Who's Watching You
The three part series Who's Watching You begins on Monday 25 May, 2009 at 2100 BST on BBC Two.