Night time

by andy
(wales,uk)

Hi, my JRT will always do his business at night time when we have gone to bed. I put him the utility room with the light on and his cage door open and with a drink available. He used to whine a lot but now he just accepts he will be alone for a while. I take him outside just before bedtime to have a wee and poo but every morning he leaves a mess on the floor. I also leave a pad by the door which he does use but not every time .

Should i lock him in his cage at night? and does he need the light on? Should he be expected to go about 7 hours without making a mess?
He is 9 weeks old.