They suck! I have bought them twice already and they only last a few months before they start curling up and the heather just sits on the floor. Does anyone know a better suction cup that is compatible with it?
I liked the ones that came with the discontinued/recalled Stealth heaters. Currently, my heaters just hang straight down and the turts don't seem to mess with them.
There are also Magnetic Suction Cups, which are pricey. I'm not sure about them interfering with the heating elements, but they do make them for heaters.