Thousands of people have disappeared from Christchurch's earthquake-smashed eastern suburbs. And so it seems have wheelie bins.
A city council staff report reveals around 9200 wheelie bins are unaccounted for in the red zone, much of which is abandoned as residents move elsewhere.
They have based that figure, an estimate, on the number of bins that should have been picked up by city council staff when the homes are vacated.
Each home should have been allocated a red, yellow and green bin.
City council staff believe they have been stolen, taken by their owners to their new addresses, or they have simply succumbed to bulldozers demolishing homes or consumed by the unchecked growth of foliage and weeds.