The Perimeter Is Mocha Secured (Maybe)

The kitty ultrasonic repellent is now in operation. It's battery operated with an IR detection range of 20 feet. The protection range is 330 square feet. This niffty gizmo is positioned in the Alysum flower bed, pointing towards Mocha's lair next door.

An invisble line is drawn in the grass. The next move is up to Mocha. Ha Ha.

What's plan B you ask?

There is no plan B per se. Cats do as they well please.