A mechanical spreader is a handy way to fertilize, spread seed, and control weeds and pests in your lawn or garden. Some spreaders can also handle sand, salt, de-icer, or dirt (be sure to check the specs). Using a spreader ensures more uniformity than hand sowing and enables greater efficiency in spreading more per hour. Most spreaders feature settings to control the size of the opening, which determines how fast your material is spread. Some fertilizer manufacturers will have a label indicating optimal spreader settings for their product. Choosing the spreader that works best for you depends on the size of your project and the spreading accuracy you need. Here are three types of spreaders to consider.