Turn off and unplug the Litter-Robot 4
Remove the globe and waste drawer
Wipe the interior sensors with a dry, soft microfiber cloth
Clean the pinch sensors and entry sensors gently with a dry cotton swab
If needed, lightly dampen a cloth with water and wipe the sensor areas
Do not use harsh chemicals, abrasives, or excess liquid
Dry all sensor areas completely before reassembly
Reinstall the globe and waste drawer
Plug the unit back in and power it on
Run a cycle to confirm the sensors are working properly