Dog Whistle
With the Dog Whistle those pesky little bums can be brought to heel.
After entering a room your bums will wait patiently by the door and will not move until you press CTRL (or swap button on controllers), pressing CTRL again will make them stop.
The first bum you get in a run will drop the whistle, alternatively if you find the trinket and have no bums pressing CTRL will summon one.
Download
The Binding of Isaac: Afterbirth+
The Binding of Isaac: Afterbirth
Required DLC:
These DLC should be installed in order to use this item.
The Binding of Isaac: Afterbirth+
The Binding of Isaac: Afterbirth