From the Manufacturer
For use between bathtub and wall. Self adhesive decorative trim is pre shaped for fast easy installation. It provides a long lasting seal and gives a finished professional look to kitchen and bath areas. Best of all the mildew resistant caulk strip installs in minutes simply peel and press in place. No tools or messy clean up.
Customer Reviews
THE NAY-SAYERS WERE RIGHT
This caulk strip by Red Devil looks like a great alternative to caulking up the space where the bathtub meets the tile in your bathroom--that is, until you use it and test it out. Wow, how I'm sorry I used this!
Although it's not too hard to apply and it initially looks very good in less time that it would take to apply regular caulk, this caulk strip has an absolutely wonderful ability to slowly peel away (on the reverse) from the space it's supposed to seal. It's practically a guarantee that you'll have a leak below your bathtub, behind tile or water anywhere else you didn't want water to go.
I don't care how many times Red Devil claims that this has no "messy cleanup;" it's just not true. Oh sure, there's no messy cleanup the day you apply this caulk strip--but just wait until it starts to peel away on the reverse (where you might not be able to notice it peeling right away) and let water through--THEN you'll have a REALLY messy cleanup!
Stay away.
not worth it
I used this product on a bathtub. First of all, it was difficult to install because it is very sticky. Secondly, it wore off after a month of usage and started to allow water behind the tub after bubbling up in some spots and easily peeled off. I would not use this if you paid me.
Be careful
Just bought a house with this (or virtually identical product) installed in one of the bathrooms. It looked great but shortly I discovered a serious water leak under the tub. The cause? The caulk strip adhesive had failed along the top and was actually causing water to get over the tub lip and behind the tile during showers. After removing the caulk strip, this tub had no leak problems.
It's also very difficult to tell if the adhesive has failed from looking at it. You may have water going behind it and not even know.
Overall, I'd say you're safer just sticking with regular caulk.