Mowers can bag the grass clippings or recycle them back onto the lawn. Bag mowers leave a cleaner , more manicured, lawn. The mower takes up more space with the bag attached, so consider storage. Mulching is when the mower cuts the grass into small pieces and allows them to fall back onto the grass, where they will decompose and add to the richness of the soil. A mulching mower can only handle cutting and mulching so much grass, so you will need to mow a bit more frequently.