Lawn mower attachments help landscapers, groundskeepers, and turf suppliers keep grassy areas healthy and well maintained. Lawn aerators let thick turf breathe and improve the supply of water, sunlight and nutrients delivered to the roots. Lawn dethatchers remove thatch from lawns to prevent it from choking out the grass. Lawn rollers level uneven or bumpy ground and pack down newly sown grass seed. Lawn sweepers collect leaves and other lawn debris. Drag harrows break up and smooth out the surface of the soil.