Instruct: Classify a given review as either positive or negative.
Query: Oscillating is unreliable therefor unit is usless

I bought this Melnor oscillating sprinkler together with the similar Melnor 360M 2 years ago and am now throwing both away as they both stop oscillating shortly after you set them up. It is very frustrating to start watering an area and then return to find that your sprinkler is stuck in one position and has failed at its intended job. I have 2 Gardena brand ocillating sprinklers (one is 12 years old) that work perfectly. Reliability counts so avoid these products.