I have used one, or actually two. First, I found them to be very cheap, not useful for more than one season, which I found disapointing. Second, in my sunny climate, even when the weather was cold, I could only use them at night or during very cloudy weather, or I cooked the plants inside. I have found translucent greenhouse material to be better for my coldframes and low tunnels than the clear plastic when it comes to long-term cover.

Catherine