How to Cancel Quip refill subscription?

From https://www.getquip.com/ you can get a Smart brush integrated with an app, Floss strings, Anticavity mouthwash, Anticavity gums, and quip toothpaste straight to your doorstep, after every three months interval. It is researched and recommended to change your brush every three months. And Quip has been helping us to do the same. But, if you …