Rubber particles and debris will fall to the bottom of the target. Some will pile at the sensors.
It is recommended to clean the sensors at 3000 shots intervals, or before competitions. Cleaning is done with a soft brush, brushing off particles at the sensor heads.
Warning!
Do not use excess forse when brushing, thus dislocating the sensors.
Target service panel at the bottom of the target need to be opened to access the sensors (sensor bar). To open the service panel, target face plate and temperature shield first need to be removed from target. Also, two rubber straps at the hatch need to be taken off. Please remember to put them back when done.