Bests & Worsts Reviews from Amazon

So the ball is great for what it does, but here is a major flaw. Do NOT leave it on any wood furniture or anything of value. My husband left it on a breakfast table for a couple of days and it left a sticky ring that will not come up. We tried washing it off with soap and water and then he tried some Goo Gone which did more damage to the table (which was his dumb move) and the ring is still there. I don't know what this plastic is made of, but it is concerning that it could do that kind of damage. please be careful how you store it.