Mechanical and manual means such as hand tools and power equipment are a big part of our care of parks. Mowers, edgers, and trimmers are often used to control unwanted vegetation. Many areas are 'rough mowed' several times a year. This kind of treatment works well for park landscapes where there is a desire to maintain a less managed level. String trimmers and other power cutters can be useful in bringing heavily weeded areas to a more manageable condition.