[Ayoka]

Originally Posted by alice's mommy

Arthur is at my store with me all day and there was a time there when he'd bark when someone would open the door to come in. As you can expect, it didn't always make the customer eager to get inside! Okay, sometimes it did! :) lol

Anyways, what I started doing was interrupting him BEFORE the customer would touch the door. When I'd see someone about to come up to the door, I'd say, "Arthur, be quiet now" and start to get a treat out. As the person is opening the door, when Arthur would normally have barked once, he now is in the process of coming towards me to get his treat. The person coming in is secondary.

Maybe try this with someone coming to your door? a friend or family member? for practice sessions.

This does work quite well, I know that when a friend of mine takes her dogs to her work she does the same thing with the one dog that tends to get anxious about people coming in. Since this is a pet supply store it's incredibly useful when unknown dogs come in too.