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.
Repairs on Peel Power Station to get underway
Manx Care doctor survey to be discussed by Tynwald
Weather warning for snow tonight
MHK queries safety at primary school in Ballabeg
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night