I’ve waited 6 months before writing this, just so I can give a completely honest review, tried and tested. Initially I thought this was pretty expensive (lots of cheaper inferior systems around which you hear horror stories about,) this one is worth every cent! Excellent service, excellent follow up and videos demonstrating how to set the fence and collars up, down to earth expectations which were so accurate....you need to put the time in with the dogs initially, 5 minute blocks, couple of times a day, show them their boundaries and we found after a week/ max 2 weeks, the dogs were not even attempting to cross their boundaries. We have had six months of peace of mind that the dogs are not wandering on the highway or in the pound or vets. We got the more expensive collars which have a lot more settings on them, trained on the minimum beep and progressed to both goldies being on very low settings, number 2 and number 3 for the bigger dog. The fence wire was very easy to put up as it only needs to to go along existing fences, in our case 10 acres worth! A little more work installing under access drive and across a creek (and back) but well worth the effort. The dogs are now at liberty to play to their hearts content without worries about locking them up if we go out or stressing when they don’t come to our call. Absolutely brilliant. Oh, the electric wall unit is on constantly with no change to our electricity bill too. So in all honesty I can say this is a first class product, well done Dog Line!