Bests & Worsts Reviews from Amazon

I read in the most popular negative review that you can get a bad one & might go through the inconvenience of exchanging it, but when you get a good one it totally works. I thought I'd try it & worst case scenario, Amazon would give me a new one that worked. Although we've never had this experience before, Amazon refused to take this item back. It didn't stick at all & only discolored the shirt! I tried it on faux leather, wood, plastic - it has yet to stick anything together.