I have 4 dashers in the house, so what I do is when I'm getting ready to come through the front door I put either my hand down by the door opening so when say Abner gets to the door he gets my hand but not like a punishing hand instead he gets a friendly hello from me and a nice head rub. This way he does not associate my hand with something bad instead he gets a loving and I gently take him and move him back into the house.

If I am bringing in my groceries, I use the grocery bags as my "blockade"