Lawn Sweeper Vs Vacuum . A lawn sweeper collects all sorts of debris from your lawn surface, from fallen leaves to acorns, while a bagger is an attachment for your lawnmower to gathers grass clippings, or sometimes. Adjust the level so that your lawn sweeper just touches the ground and experiment with travel speed to find the ideal way to pick up the pine. Stand On Lawn Mower Catchers Custom Built Leaf Vac from proteroinc.com Usa's #1 lawn and leaf vacuum | cyclone rake. But the sweeper grabs them up as well as the little spinners from the maple. “the acorns are a pain to collect.