Rain barrels are becoming a common site in gardens. But how do they work? How do you prevent them from becoming a breeding ground for mosquitoes? And are they worth it? The original purpose of the Mount Denson Garden Club of Hants County was social — just to enjoy gardening. Meeting at the Hants Wildlife Association building in Mount Denson on the second Wednesday of the month, it has since turned into more of a learning and sharing club with the hope of growing the love of gardening and nature in the community.