"Dave Balderstone" wrote ...

If the problem is outdoors, try this rather than ultrasonic.

Unfortunely it is not outdoors (and the other human being concerned won't
let me throw the %@#! cat outside after dark).

It'll actually work [...]

Are you just being dubious here, or can I take it that you have
reason/experience to believe that these electronic/ultrasonic cat repellant
devices don't work as claimed? If the latter, please fill me in. Thanks.

Ken