I'm pretty sure everyone says it's not strong enough, it was just installed wrong. I bought this because my older dog goes downstairs in the middle of the night but can't get up unaided so he will sit and whine until I get up and help him. I couldn't just close the door because I wanted the house to heat/cool evenly and I wanted the cats to have access to a toilet and water. The tape was incredibly easy to install. I wiped down part of the wall and door with a chlorox wipe, let it dry and taped both strips of 3M in place. I adjusted the strap to be as wide as possible to keep dogs out and put on a blue safety guard (which is easy to remove and put on when I want to close the door, it just pushes against the door) which does that keeps door from accidental closing. The old dog isn't worried about this but my 5 year old 85 lb golden retriever tried to force the door open to no avail! Very very good product
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