Dirty nappies, fish bones and the severed remains of a deer are just a few of the items that have been appearing in Masterton's Doggy Doo Bins.
Masterton District Council officers are unhappy that the bins, designed for people to dispose of their pooches' mess, are being used for dumping household rubbish.
The bins are emptied weekly by animal control officers, who are now regularly uncovering illegally disposed refuse.
"There are around 45 Doggy Doo Bins in the Masterton urban area and unfortunately a number of these are being abused," said planning and environment manager Sue Southey.
"Officers are finding sacks full of domestic rubbish every week.