Metal Fabric Staples 4 inch are galvanized wire staples. Push them 10cm (4″) into the soil, at 30cm (12″) spacing to hold floating row cover in place. They have more stability if you push them in on an angle like tent pegs. These one inch wide staples will secure row cover in place, but can also be used for holding drip irrigation lines, electrical cords, paper mulch, or any other garden use. In most soil, it is simple enough to just push the staples into the soil by hand rather than using a mallet or hammer. Apply lightweight row cover early in the season to protect your carrots from the carrot rust fly.