How to Make Suction Cups Stick Better

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Suction cups ideally hold a hook to suspend and object on a window or flat surface, but many times they do not stick. They work when the air pressure on the outside pushes harder on the cup than the air pressure on the inside. Creating an air-tight seal forms this air pressure differential needed to make the cups stick. To make your suction cups stick better, follow a few tips for their proper use.

How to Make Suction Cups Stick Better
(Yolanda Zaragoza Cano/Demand Media)

Things You'll Need

  • Suction cup
  • Alcohol
  • Paper towels
  • Water
Step 1

Select your surface carefully. Avoid porous, rough-textured surfaces, and opt instead for glass, tile or stainless steel.

Yolanda Zaragoza Cano/Demand Media
Step 2

Look for the largest suction cup possible to get the best suction against the surface.

Yolanda Zaragoza Cano/Demand Media
Step 3

Clean the surface and the inside of the suction cup. Wipe up all dust and dirt which prevent an air-tight seal from forming. Use alcohol as a glass and surface cleaner to remove all grease and oils from the surface and from fingerprints.

Yolanda Zaragoza Cano/Demand Media
Step 4

Wipe all the cleaner off with paper towels to avoid getting fabric fibers on the cleaned surface.

Yolanda Zaragoza Cano/Demand Media
Step 5

Moisten the inside of the suction cup with water, and press squarely against the surface.

Yolanda Zaragoza Cano/Demand Media
Step 6

Remove a suction cup by peeling up the sides rather than trying to pull straight from the middle.

Yolanda Zaragoza Cano/Demand Media

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