I ordered four of these. As the shipment arrived, bout of the box one of the pieces was already broken. Specifically the two clip locks that attach the green part to the base. As I proceeded to install them in the yard, all of the three other broke in the same spot. This failure does not effect the performance but its not what you would expect from a high priced quality product. Also having kids in the yard, I would expect a secure closer when you have harmful chemicals in these things.