Ed - Do you have a particular brand that has been successful for you? I LOVE them, and use them frequently, but I replace more often than I'd like. They stop adhering properly. I am thankful for the designs that allow you to see a color (red) when it's not on tight, plus I always know to check that they are firmly intact before I enter the shower in time. I use 2 small bars in my showers for the locations I find most useful. I have replaced 3 in the past year where neither lasted 3 months (2 were same brand/batch, $25 & lasted 1 month each). Before that, the ones I had seemed to last closer to 2 years but I haven't seen ones that look like them. I'd rather not pay more than $30 for a 16"-18" bar, but whatever I spend, I'd like the suction to be more reliable. (trust me, it hasn't been user, my engineer husband couldn't fix them)