Brilliant invention. I got our rescue boy from a rescue centre and they recommended we kept him indoors for 5 weeks before letting him out. I wasn’t sure if he would come back home once we opened the door so we bought petTracer after looking at the alternatives and reading other reviews. The main thing for us was the size and wanted to buy once and buy good so we went with pet tracer. I could see exactly our cats routes and kept looking at his history in the portal and how the natural territory has expanded over the last few weeks he has been going out. Very happy with it and definitely recommend.