Bought a one acre kit pet barrier for our escaping 5 month old terrier Jack 6 months ago. I submitted the on line enquiry and shortly after came through emails providing me with video links, plenty of information, and a phone call to talk about what we needed. I'd done my research and had already made my decision, but the service sealed it. Literally within two days of placing the order, the kit arrived and we easily installed it on our farm fenced property. I followed the protocols for training that Colin advised me to do and Jack was running away from the flags with only the beep sounding by the second day, We switched it up as per instructions and Jack gently got a reminder about the fence and from that day forth Jack was contained on our block. It really was that easy. Our old dog is too big to go through the fence, she soon worked out she could go close to the fence and Jack couldnt, she takes the ball down inside the beep zone close to the fence and Jack jhas to wait for her to come out. Thanks Colin for great service, a great product and for helping keep our dogs safe.. Alma, Mark, Maggie n Jack