As the Lake Lanier Association approaches its 27th annual Shore Sweep on Sept. 26, the group has a new tool in its arsenal for ridding the lake’s shores of trash: a cellphone app. The “TrashOut” app allows users to take a picture of trash big and small and give the exact coordinates of the litter. The association has already counted more than 200 reports of trash at Lake Lanier and will use the information to help dispatch volunteers in the most effective manner.