It depends on a particular type of it. In my opinion, flat platforms or circles are almost useless. In most cases, they, on the contrary, help animals to get to the feeder. If you pick up the cone or dome-shaped squirrel baffle for trees of the right size, it will be an excellent shield against these annoying pests. If you chose a baffle of a cylinder or torpedo shape, make sure that it has enough space around the pole for free rotation, and then there will be no problems with squirrels.