I've seen some people say they leave their lights on a timer when away. I've never done this and am wondering if I should, when away at Christmas.
My house isn't pitch black at night as there are street lights and a neighbour with a glaring garden light. When I put the lights out at night my cat promptly goes downstairs for a few hours to look for insects / watch for intruders/ eat / whatever other cat business she has. So she seems fine in the dark then.
I do have a timer, so could use it. Does everyone else use them?