Why a den
A den is not an escape from everyday life. It is a familiar destination within it—somewhere the same cue, reward, and routine can make uncertain moments easier to understand.
The doorbell does not have to mean charge the entrance. With practice, it can mean go to your place. Koja gives that cue one consistent destination and puts a quiet reward where the calm response happens.
Use the same cue before opening the door, reward the settled behavior, and let the den remain available after the visitor comes in.
Prepare the retreat before the first boom. Their den stays familiar while a steady routine, your voice, and a protected place make the outside noise easier to weather.
Keep the den accessible, add familiar bedding, practice settling on ordinary days, and never wait for the frightening moment to introduce the space.
The same sleep, settle, potty, and reward cues can follow them from you to the sitter and back again. A shared place makes good care easier to repeat—even when the person providing it changes.
Keep cues short, agree on when rewards happen, and use the same sequence around departures, returns, and sleep.