Great for do-it-yourself lawn care, Agri-Fab's spike aerator perforates sod and grass to let in nutrients, air, and moisture for a healthier lawn. An array of rotating star-shape tines slices into the soil to allow additional seed, fertilizer, water, air, and light to reach the grass roots. The 5- to 7-inch spiked wheels provide up to 2-1/2 inches of aeration depth. The long axle offers a 16-inch aerating width to cover a lot of ground fast. The aerator is equipped with a steel weight tray designed to hold a concrete block that pushes the spikes into moist ground. Some tool-less assembly is required. The spike aerator is covered by an Agri-Fab 12-month warranty on parts and labor. --Brian Olson