We use suction cups to hang a linen skirt around our RV. We are in the RV all the time so they stay there for the winter. We placed the suction cups on a smooth surface along the bottom on a 50 degree day. I was concerned that the surface would not be entirely smooth like metal or glass. The sun was beating down on the front, so the material and suction cups were warm. The back was darkened so it was cooler. We had a few falls in the beginning, mostly from behind. I cleaned the cup and the surface with alcohol and used a heat gun to heat it up. We had a couple of weeks with nighttime temperatures below 20, wind gusts above 20 m/s, rain and light snowfall. The suction cups hold tight. I haven't had to wear them in over 2 weeks. Sometimes one of them pops out, but I'm very happy with how they work. If they're up to the task I've given them, I can't imagine any problems in a more conventional application, especially indoors. The only small issue I had was that the hook was too big to fit all the way into the grommets on the tarp so I had to sharpen the sides a bit. If in doubt, try them out. I took a leap of faith by buying 5 bags at once and I'm happy!
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