Safety · 4 min
How suction-cup cat furniture actually works
Why a clean seal matters more than cup size, and how often to re-seat cups.
A suction cup holds because air is pushed out of the cavity and atmospheric pressure holds the cup against the glass. Anything trapped under the rim — dust, grease, condensation residue — creates a leak path.
Clean the glass and the cup with a mild alcohol wipe before mounting. Press firmly, then lock the lever if your cup has one.
Re-seat cups monthly and replace them every 12 months, or sooner if a cup no longer holds firm. Never leave a window-mounted piece unchecked for long periods.
Ready to build the route?
Start with one perch and add pieces as your cat's confidence grows.
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