Bride commissioners are appealing to people to dispose of rubbish properly.
On Facebook, the local authority says a bin in its car park has been used to dump huge amounts of cardboard and plastics.
The local authority says the facility is for household waste only - and it may stop its open bin service if it's abused.
In April, it withdraw from the Northern Civic Amenity Site saying it was too expensive.
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Commissioners say “pick up your pooch’s poop!”