Human interaction
Avoid punishing undesirable behaviour but equally resist the temptation to soothe the dog’s fear. This will give the impression there is something to worry about. Remain neutral, lead the dog to the refuge and encourage him/her to stay there. This helps prevent over-reliance for comfort and therefore panic in your absence.
Give positive attention and affection when the dog is relaxed and not frightened, use food treats/games as necessary though some dogs aren’t keen so don’t expect too much. It is vital to ignore the noises yourself, appear happy and unconcerned and encourage the use of the refuge. Reward relaxation and recovery.
Ignore the noises yourself and if your pet is only mildly fearful, you could try to engage your pet in some form of active game. Try to appear happy and unconcerned. It can help if you play a game with another pet in the household, because the frightened one may be tempted to join in.