megansmomma is right ... this is a control issue
when they are chasing after a pair of feet
trying to call them off isn't going to work
What you need to do is get a volunteer pair of feet
Have someone come to the door
Let them in........ BUT
if they go charging after the feet? Close The Door and sat STAY
You keep doing this until they get the message
That the person does not enter the house until they are calm and don't attack the person's feet