I was first introduced to Erva Products when I owned and operated a Wild Bird Crossing store in 1995. At that time, I began not only recommending and selling Erva products, but using them in my garden as well. Now, twenty years later, all of the Erva products in my backyard are still in excellent condition, proving that Erva products are superior to all others. I just ordered the dark green tray, which I fully expect to last at least the next ten years.