RoomWithABrew
Landlord.
The milk works really well, I use semi skimmed as it's all we have in the house.I've heard that you can paint the back of a plain paper label with milk and it'll stick pretty well the the bottle when it dries, but then comes off easily. I've never tried it though
I paint some on the bottle and then on the back of the label and they stick very well and come off easily when soaked.