msukiwi:
Well I have been using the "CatFree - Automatic Cat Repeller" from Easytek in Christchurch for the last 10 days. (Cost $89.70 with free shipping at present.)
It has been 100% effective so far for the cats visiting our place that venture near it.
It so far is so effective that I have ordered another one to protect another area.
It has no effect on birds or hedgehogs.
I have a camera covering the area around it, so can see the effectiveness.
Boy does a cat move when it is triggered. :-)
Ah, that's the one I got. It is hard fro me to know whether it is effective as the cat crapping by our clothesline only did it spasmodically. It detects us out at the clothesline as you can hear it clicking!
So, thanks for the camera evidence report. That is encouraging.
Stick the camera evidence up so we can see it, as anyone putting up with neighbours cat's crap could do with a laugh!