In article ,
enlightened us with...
I have two desexed adult male indoor-only cats. At night, a
neighbourhood cat visits our house and lurks in the front yard, often
sitting on the doorstep. This completely freaks out my pair, with lots
of banging and crashing as they jump up on things to try to get a view
of the other fellow, meowing, growling, ridiculous barking noises, and
generally waking us up. We rent, or I'd just build a fence or
something to keep the Enemy Cat out. Is there some harmless way I can
scare the intruder off?



Motion detector activated sprinklers, if you can afford it. They're not
overly expensive, really. Under $100 generally.
They work pretty well for racoons and possums, too.

http://www.pondsolutions.com/predator-control.htm
http://www.greentouchirrigation.com/scarecrow.html

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~kaeli~
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