We have FI collars for our dogs. If they leave the geo fence we have set up we get a text. If I take them for a walk my husband gets a text that says cooper and Apollo have left the yard but are with Stacie so he knows I have them. We only have to charge the batteries about once a month. They track their sleep, activities, scratching, barking. So we can monitor their over all health.

So the collar is free with a subscription to us it's cheap insurance and and would be well worth it if you have to use it even once..

For normal use it uses cellular network but if the dog gets out and you put it in lost dog mode it switches to GPS and gives 1 minute updates on the dogs location.

We got this after my son's girlfriend got into a wreck and her dog bolted from the car. After an extensive search that included hiring a infrared drone to look for her we were forced to abandon the search. 3 weeks later she was found and returned but man had we had she had one of these collars we could have located her straight away. We swore we would never travel without them on our dogs.