After trying a citronella collar from another service and still having issues with nuisance barking, I found a brilliant video that described treatment with the electronic collar. I immediately headed over to the Dog Line and was extremely impressed by the collar being offered for rental. The collar has been working so well that we decided to purchase it at the end of the trial. The service from the Dog Line was surprising... many follow ups during the trial and more than happy to help out. Highly recommend their service, don't buy elsewhere... these guys offer a affordable and dependable service.