Maybe its just me, but when I tried yelling the command "SIT" or "GO HOME!" it just seemed to anger the damn dog even more. Pedaling fast works but some dogs on a mission will keep up with you for a couple miles and probably isn't suggested for someone riding 10mph on a full loaded bike. My former riding partner would unclip and swing his foot to try to imprint his cleat on the dog's head. I don't think that ever worked though.