Your pup might be skittish at first, so keep your all loud noises until he's become informed about his new home.
Therapies are doing is reduce the blood flow to the tag and by tying the string tightly you can trim the blood circulation and thereby letting the tag die and fall of. https://www.tobesmart.co.kr/bbs/board.php?bo_table=free&wr_id=1425046