Camera at night steams over so no view or motion detection

At night the doorbell does not work as the camera steams over with condensation so view is obscured. My husband came home at 2am and the doorbell did not detect him parking on the drive or coming in the house.
Just to clarify there was not fog it was a clear night

Hi @Neefa. Some neighbors have found success by applying a small amount of Rain-X on the lens with a microfiber cloth. This should help mitigate some of the environment your doorbell is in.