How do I stop a dog barking at me?

I used to have a barking problem at my house,and this is what I did.I bought this little device,not sure what they call it.It lets out this high pitched noise when you push a button on it.The noise is so high pitched that us humans don't hear it,but dogs hate it!It worked like a charm for me,now I just have to show it to my dogs and they stop whatever mischief there up to.They cost about $15 and are well worth it.I can almost guarentee those dogs won't be hiding in the bush waiting to torment you any more :) In fact you won't see too much of them when your in your yard.