Bought the GEO7 to place around our newly planted field [of] replacement blueberry plants. We then place white sand over the GEO7, which is around the plant. We have done this for three years, since we found this deters grass from growing immediately around the young plants. We have no complaints.
I bought it to keep the weeds out of my pots, it has saved me so much work, I just wish there was something on them so they would not blow off, but I would never do without them.