Before coming here, I had spent some time with my parents. They seemed to be in good health and their practice seemed to be thriving. More muggles were going to the dentist, proper mouth hygiene was important. The wards had never been triggered. Not that I wouldn’t have known if they were. All the protection on the house and the necklaces have the key feature of informing me immediately. I didn’t want to take chances with my parents having to possibly fight off magical threats. 