Best DOG REPELLANT?

HELLO EVERYONE I NEED TO FIND A STRONG DOG REPELLANT SO MY HUSBAND CAN PROTECT HIMSELF SINCE HE HAS A JOB THAT IS AT RISK OF BEING ATTACKED BY DOGS, and was almost attacked by a pitbull THANKSBest DOG REPELLANT?
Lead
A GUN
A gun
A bat.
mace pepper sapray or a well-mannered hard boot upside his organizer or in the antenna if he is really being attacked,if he is attacked resembling my lil brotther was i grab the dos head but he kept getting loose so i shoved my fist as far within his mouth as i could so he couldnt bite down to hard andbeat the crap out of him til he took sour running
Jeeeez, psychos are answering questions similar to this. No guns and no bats. It's cruel and can any backfire or give your hubby a lawsuit.
My ex's dad is a letters carrier and alot of them pass around mase. Any place he knows in that might be a threating dog he can have it all set.
Or maybe he can convey around a bag full of beef shaky..then perchance the dogs will love him =)