Dog Repellents - Yeah or Nay?

[msincredible]

Somewhere I read(don't remember where) that the best thing to do when a dog is chasing is to vary your speed because it will throw the dog's speed off and they will give up, they can't adapt to a slow-fast, etc... Don't know how true this is.

It's true (you slow down, then suddenly accelerate) but works best on a motorcycle, you can't always out-accelerate a dog on a bicycle.