ALLCLIR's patent-pending chemistry-based sensors create an easy to read signal that a room or space has been carefully and properly sanitized. When part of standard cleaning procedure, ALLCLIR puts peace of mind in plain sight. Application is simple: single-use, fully recyclable sensors are placed in space during cleaning. The sensor transitions to BLUE when in contact with CDC/EPA recommended concentration levels of disinfectant against virus and microbe. It is designed to elevate confidence in wellbeing by allowing you to see and believe reliable hygienic practice.