How do I return the Sutro Smart Monitor? December 02, 2021 04:11 Updated Please click here to see return information > https://support.mysutro.com/hc/en-us/articles/360047009454. If all else fails, just email us at firstname.lastname@example.org, and we'll get back to you. Related articles What is your return policy? What is the warranty period and what is covered? Can I buy cartridges individually? How much does a Sutro cost? Does Sutro have a beta testing (or dogfood) program?