So I brush my teeth twice a day, and what if we had a toothbrush that tastes like candy, and when the taste of candy ran out, you'd know it's time to change your toothbrush?
Saya menggosok gigi  2 kali sehari. Bagaimana jika terdapatnya berus gigi yang rasanya seperti gula-gula? Apabila tiada lagi  rasa gula-gula, anda tahu sudah tiba masanya  untuk menukar berus gigi anda?