Hey mona b, thanks! It's been a busy one for a while.
The nipping at our heels - that I'm used to. He responds to "off" when he's trying to herd us.
But this niping at the kids pants and arms is new - just this past week. I'm staying consistent with the "off" command when he does this and yet he will not respond. If even responds for a second we praise him lots to let him know and yet it continues. Lately we've taken to putting him on leash when this happens to control him better and keep the kids safe.