Our kittens are 9 weeks old now and I'm wondering if I should continue leaving a nightlight on in their room at night. At first they had a small space in the spare room but, as they are extremely settled and very confident, we're now leaving them in the kitchen at night as it seems to be one of their favourite spots to hang out in, it's roomier and it's also been cat proofed. They sleep well and don't fuss or cry. I don't know whether just to carry on as is, or whether to try darkness. It seems like if it isn't broke don't fix it, but at the same time could the nightlight be irritating to them? At what point do you switch off the nightlight, or don't you? When they are older and past the wire chewing phase, I'd like to give them free run of the flat. I've never had a nightlight with previous older cats, but is it a good idea to leave one on in one room?