Many people want to let their cats outdoors but they don’t want their cats to risk getting hit by cars or attacked by dogs or malicious people. One solution is to build an enclosed cat patio, called a catio. Another is to walk a cat on a leash.
Yet another option is the Oscillot from Australia. This simple device rests on top of a fence and spins so when a cat jumps up to climb over the fence, it hits the spinning Oscillot and can’t get a grip so it falls back to the ground. Such a device can keep your cat confined within an outdoor area where it can be safe.