A mobile cleaning robot system can include a mobile cleaning robot and processing circuitry. The mobile cleaning robot can include a camera and can be operable to clean a floor surface of an environment. The processing circuitry can be in communication with the mobile cleaning robot and the camera, the processing circuitry configured to produce an image output based on an optical field of view of the camera. The processing circuitry can also detect a visual fiducial in the image output and can determine a behavior modification based on the visual fiducial. The processing circuitry can modify movement of the mobile cleaning robot based on the behavior modification.