On 12 June 2002 the Wellington City Council reported back on the results of trials of dedicated dog poop bins at several venues around the city:
Purpose of Report To report back on the results of the Dog Doo Bin Trial and provide recommendations for the way forward. …
Results from the trial reveal that the project has achieved some improvement as the bins have been accepted without damage, they are being well used and the subject parks appear to be gradually becoming cleaner.
[Via : DOG POO BIN COMMITTEE REPORT.]
Update, July 2009: it seems the company that manufactures these bins is Stallion Plastics in Palmerston North, New Zealand.
