We apparently underestimated the persistence of one of our cats. She pushed a filled cardboard box away from where it was blocking the cat door, so that she could bring in another squirrel. Now: duct tape.
Im suddenly happy that our cat door came with a slide in plastic 'closer' - Shannon - GlassMistress
i've got a cat like that. we're on solution #4 in an attempt to keep her from opening a screen door. outwardly i swore & scorn but inwardly i adore that she's so smart! - Lnorigb
Mark, you need the rfid cat doors. Only the chip ont he collar allowed in! Also, that's way too funny!' - RudĩϐЯaЯïan
My friends had to install bolts in their sliding doors to prevent the cats opening them. - Deborah Fitchett