家里有狗狗的有用过Wireless Fence吗

想给狗狗买个但是不知道这种东西是不是真管用 https://www.petco.com/shop/en/petcostore/product/petsafe-free-to-roam-wireless-fence-2567967?store_code=3731&mr:device=c&mr:adType=local&cm_mmc=PSH%7cGGL%7cSPP%7cSBU04%7cSH10%7c0%7cmGg7T2FE7nJwuoiKKet5SF%7c58700007475749828%7cPRODUCT_GROUP%7c0%7c0%7cpla-1521784998677%7c130609647353%7c15104832450&gclid=CjwKCAiAhqCdBhB0EiwAH8M_GoJcr3CLV4cG5Z74t6FnkoahxxMU1JDYrqQ7biTeI-pAcceCbBMocBoCeFQQAvD_BwE&gclsrc=aw.ds
有用过的说说吗