Tabcat is the second tracker that I tried for my cats. They are inside cats that go out during the day. I live at the edge of a small town, so there is overgrowth around the boundaries of our property, so they like to hide and watch me look for them. Tabcat is the best radio tracker I've used. Takes me right to them. They've even lost their collar, but I tracked and found it as well. Love that I can silence the handheld tracking device so I can hear their tracker on their collar beeping. Only issue is when my one wanderer wants to go a little further than she should. I do highly recommend Tabcat!