My mom called me after work and informed me my dog had gotten out for the second time. The first time she had gotten out she did not have a chip and I was very fortunate to get her back! She is now chipped and this time she got out was only gone a few hours before someone had called me due to the chip! I am so grateful for the chip because I did not have to wait 3 days to find her in pure luck! Best money I have ever spent!!