Castletown commissioners say if left your drugs at a leisure facility in the town, you can now pick it up from the police.
The local authority says 'special herbal cigarette mix' was found at the bowling green on The Crofts last night.
On Facebook the board says anti-social behaviour there is on the rise - with incidents involving litter, broken glass, and public urination.
Commissioners are asking people to treat its facilities with respect, adding they've asked police to patrol the area.
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