To get suction cups to stick without slipping, choose a smooth, non-porous surface and clean the area thoroughly. Wipe the area with rubbing alcohol, then press the clean suction cup firmly against the surface. Leave it alone for 24 hours afterward to ensure a strong seal.
Caddies are notorious for falling, can be difficult to secure and often fall because the inadequate pressure within the suction cups. To keep the caddy from falling, you can try to reapply the caddy or purchase a mounting kit that will secure the caddy to the shower wall with adhesive.
Any impurities such as mineral deposits from hard water, soap scum or even traces of water on the tile wall will degrade the suction cup's ability to stick. Thoroughly clean the tile with water and a household cleaner of your choice. When you're done, dry away any traces of water using a dry cloth or a sponge.
Boil the Suction Cups
The heat softens the plastic, which can help them adhere easier. You don't want to boil them for a long time. Remove the section cups after 30 seconds and pat them dry with a lint-free cloth. As soon as they're dry, stick them to your designated surface for the best suction.
Clean the surface you are applying the suction cup to. It won't adhere well to a dirty surface. To enhance suction, a tiny dab of Vaseline or cooking oil may be rubbed on the rim of the cup. Press the cup all the way down, against the surface.
When pressing a suction cup down on a material, tiny irregularities in the material's surface may allow air to pass between the seal. Wetting the surface fills these small gaps so that the air cannot pass through.
A Self-Adhesive Corner Shower Shelf is a Short-term Solution
You'll wind up with a shelf that may work for a few weeks or months, but sooner or later it's going to slide off your wall along with all of your shampoo and products.
Temporary Shower Storage
The main benefit of suction cup storage is that it is typically affordable and simple to install. However, one of the cons of suction cup storage is that even the strongest suction cups can begin to slip over time, especially in a wet shower environment.
The pressure difference between the atmosphere on the outside of the cup and the low-pressure cavity on the inside of the cup keeps the cup adhered to the surface.
Suction cups adhere best to smooth, non-porous surfaces such as tile, glass, fiberglass or metal. To ensure a firm bond, surfaces should be totally free of dirt and soap film before attaching the suction cup.
It's better to do this using warm water to soften the cups a little bit to enable easier adhesion to the glass or any other surface you may be applying. Clean the water but not completely. This is because little droplets of water left in the suction cup would serve as a weight to drive out air pockets during adhesion.
Clean the area where you want it to stick and the suction cups with rubbing alcohol. Then smear a drop of mineral oil onto each suction cup before you put it up. The oil will help create the suction it needs.
Suction cups like warm surfaces. So if it's really cold outside, use any warming device you have to warm up the designated window- even with a hair dryer! It will create a stronger bond with the window.
Ordinary suction cups only stick to flat or glass-smooth surfaces because the delicate vacuum seal the forms between the cup and smooth surface cannot fill gaps in a rough mounting surface. FrogsFeet Suction Cups on the other hand mount to just about any nonporous surface from smooth to highly textured.
If you have petroleum jelly lying around your house, you have what it takes to make this home hack happen. All you have to do is dab a little petroleum jelly into the cup and hold it in place wherever you're attempting to stick it. Yup—it really is that simple.
Don't weigh down your shower head
Shower caddies can be useful, but hanging them right from the shower head is a bad idea.
It's usually the coil that breaks down. The coil (when working) lifts a plunger inside the solenoid valve and allows the water into the shower. When the coil breaks down, the water stops running and that's what causes the problem.
Wetting a suction cup makes it stick better because the water fills in the imperfections, and allows the small vacuum created by the elastic properties of the suction cup to be maintained longer.