An oscillating sprinkler is ideal for watering rectangular surfaces. An oscillating sprinkler is also ideal for entertaining your children when it's nice out. If you want to water a circular area, look into a circle sprinkler. Or, do you want to have all the freedom of choice when it comes to watering? A multi-sprinkler might be the one for you. Keep in mind that you'll need a hose fitting (possibly with water stopper) to connect your oscillating sprinkler to your garden hose.