Hi Woollyval,
It does have a good reputation for working but we never used it in the end as our dog we predominantly got it for had a jumping accident (impaled herself on some spiked railings
) shortly before we were due to install. She still occasionally sneaks out but isn't anywhere near as inclined as she used to be. Another dog was too stupid to escape on his own and only followed her out when she escaped. The third died of cancer. It just wasn't essential anymore so we never installed it.
Best bet is to check it out on the website which is
www.dogfence.co.ukHope that helps you decide yay or nay. Perhaps someone out there has more experience of actually using this particular system and can offer more feedback on it's success?
Have to say I've had a 'not great but it may have to suffice' offer from someone through Ebay and am currently waiting on a call from them on my mobile to discuss further so get in touch fairly quickly if you are AT ALL interested before I reluctantly settle for what they're offering.