Management is definitely a critical part of any behavior modification or training plan and involves preventing the dog from rehearsing unwanted behaviors. Management can involve, but is not limited to: crates, gates, leashes, fences, installing cat doors, putting cat food where dogs can’t reach it, closing bathroom doors on toilet paper eating puppies, keeping laundry picked up off your floors, electrical cords where your puppy can’t chew on them, careful manipulation of criteria, rearrangement of schedules, Calming Caps, walking your reactive dog at times of day or in places which will not send her over threshold, and controlling the behavior of humans in the environment to ensure that they don’t reinforce undesirable behavior.
Sometimes, management is the easiest solution. I discuss a few of these situations in an article I wrote for PetExpertise.com a while back, Is Training Always the Answer? When to Train and When to Manage.
Management can often be a permanent solution.