Ontario Provincial Police in Dryden were busy over the Victoria Day weekend at area camps.
Police say they had patrols in the Centrefire Road, Amesdale, Good Lake, Route Lake, Gilbert Lake and Blueberry Lake areas.
Officers say seven people have been charged for underage drinking.
OPP also mention that two people were arrested for possessing cocaine.
Police add that they seized 89 bottles of beer along with many alcoholic coolers, wine and hard liquor.