Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Two in two months had the head pop off, almost ruined my garden

I bought one at the beginning of summer, the head popped off, so I exchanged it for another. I was away a week and came back to the head popping off of a second one. The garden was almost shot. I would stir clear of these if you can not baby sit your yard. Any recommendations on ones that you can feel more secure with?