Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy to install, easy to use!

We selected this product based on price and customer reviews. We are SO pleased. Have been using the product for nearly a year. It was easy to install, has been no problem regardless of weather and the dogs were easy to train. We didn't follow the training CD or the 2 week training protocol. We showed it to our dogs a couple of times and they picked it up very quickly. Fantastic product!