I have a 4 oz canister of Fox Five Point Three pepper spray on my top tube in a Defense Devices holder. The 3 ounce version on my wife's bike.

Here in the city we have those who will train their pit bull(s) to fight. When they escape and roam the streets you can be in trouble if one takes a dislike to you. The other day I was out working in the yard. I heard some kids yelling for help. They had climbed a 6 foot stockade fence to get away from a pit bull that was growling at them. They could not get down until the dog was gone. I opened my back gate a crack. The dog headed for me growling. I gave him a short spray with the Fox stream canister. Not the fog one. Just a light shot. The dog dropped to the ground and started pawing at his nose. I opened the gate and stepped out pointing the canister at it. It then got up and ran down the alley. Then the kids could come down off the fence. Two days later the local police and the Animal Rescue League caught it and took it away. I like dogs so I didn't want to give it a lot of spray in the face. The quick shot stopped it and caused it enough discomfort that it went elsewhere.