Stop Barking Starts With Diagnosis, Not Correction

Bark collars, spray bottles, and yelling all target the sound. That's why they don't work — barking is a symptom, and treating the symptom leaves the underlying need unmet. The dog either finds another outlet or suppresses temporarily and rebounds later.
The five functions of barking. Alert (someone at the door), demand (I want that treat), frustration (I can see the other dog but can't reach it), fear (that stranger is scary), and boredom (nothing else to do). Each has a different solution.
Alert barking. Two or three barks is your dog doing its job. The problem is the ten barks after. Teach an incompatible behavior — after the first alert, cue "go to your mat" and pay heavily. The bark becomes a signal that predicts a rewarded behavior.
Demand barking. Never, ever pay it. One reinforcement teaches a dog that barking is a slot machine. Wait for a moment of silence, then reward the silence. Extinction bursts (worse before better) are guaranteed for the first week — hold the line.
Frustration barking. Almost always about barrier frustration — window, fence, leash. Manage the environment first (window film, longer walking routes, distance from triggers) while you train an alternative behavior at sub-threshold distances.
Fear barking. The most misunderstood. This dog is asking for space. Every "no bark" correction confirms that the scary thing predicts bad outcomes and makes the fear worse. Work with a certified trainer on counter-conditioning — pair the trigger at a safe distance with high-value food until the emotional response shifts.
Boredom barking. Fix the life, not the bark. Two structured walks a day, a puzzle feeder for meals, ten minutes of training, and a real chew every evening. A dog with a full life doesn't need to bark to fill it.
The mindset. Ask "what does this bark accomplish for the dog?" before you ask "how do I stop it?" The answer to the first question is always the answer to the second.

