Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Effective but fragile and wandering.

The tractor sprinklers, in general, are a great way to water a large lawn without having to move sprinklers around every half hour. The Gilmour John Deere Traveling Sprinkler, however, is prone to breakage and tends to wander off track.. The main body is metal, but other important parts are cheap plastic. The auto shut-off plunger on the underside was the first part to break, and one of the nozzle arms broke when the tractor flipped over. This product requires close monitoring because it tends to derail from its hose "track" and wander off on its own.I recommend a similar product by a different company.