This helped organize the shower. It went up exactly as the instructions indicated.

you don't want to put this on crooked as I did. If you have access to a level use it to draw a horizontal line to line the adhesive pad up with. I thought I was level but I was wrong and it looks terrible. And don't think you will get the pad off without a dryer or heat gun (on its lowest setting) cause you won't, not even right after you put it on. trust me on this.
Other than my user error it's a great item and I don't think you'd have to worry about it coming off as long as it's on a smooth surface that you cleaned with rubbing alcohol.
I put one on crooked and had to take it off. I used a heat gun on a lowish setting. Just be sure to keep moving it as you don't want to overheat one spot. I did have to use a flat blade screwdriver to encourage the hook section to let go. I also used the screwdriver to disconnect the basket from the hook. Just put the blade against the wire and bumped the handle from below. The whole thing took about 10 minutes. It left some adhesive behind and that was a pain to remove. I just rubbed it with my thumb till it rolled up and came off.

Great customer service! I received an email from seller checking on on my purchase. They also send clear instructions and mail a new strip to stick them if needed. Mine have not budged and they have been up over a year with heavy items on them. They hold so much! And even really big products fit with extra room. I love these so so much!!

Easy to install. Durable. Much classier than over-the-shower-head racks.

This caddy has been pretty great so far. I received two caddies and three adhesive sheets that have three clips each. I opted to cut the sheets down as I'm a guy with not so much for the caddy to hold and I move frequently. The sheets cut easily but getting the caddy level was way more difficult with the two clips not attached to the same sheet.
The adhesive sheets themselves have some industrial glue on them. They'll tack to the wall as soon as they touch and even when fresh they are pretty hard to get off for re-positioning.

The reason for four stars is that the adhesive is extremely difficult to get off. After about a month I decided to move the caddy and while detaching it from the adhesive sheets (two since I cut them in half) and re-installing was easy, the removal of the adhesive sheets from the wall was difficult. One other note to knock it: one of the clips that hold the caddy broke when I was trying to remove it to change locations.
I initially tried just pulling the sheets off by hand but gave up after only getting one corner off about an inch. I left the sheets on the wall for a couple months until I got a hold of my heat gun (an industrial version since I don't have a hair blower) before trying again. Zapped one sheet at high (>1000F) and only managed to tear the hard plastic part of the sheet. Ended up using a paint scraper to get the hard part off the wall but most of the adhesive was left behind. I figured I'd be smart and go with a low (~350-500F) temp on the other sheet figuring maybe I went too hot but I had the same result: paint scraper and adhesive stuck on the wall.

If you plan on having to take these things down (rental/lease/dorm/etc) I'd be very careful with these. I can easily see this adhesive being stronger than the grout holding some older tile on the wall or the glue holding laminates up. Heat didn't see to do the trick so maybe a citric solvent of some kind may work better. I don't know the answer but so long as you have the caddy in a spot you really like and don't plan on removing it's a sturdy little thing!