I would have serious doubts about that being effective, especially long term.
But I gave the site a quick scan and they note that they have a 100% money back trial period, yada yada. So I suppose I'd probably read the fine print carefully, and if that's really the case, and they have a decent enough rep (google them perhaps, see if you can dig up any reviews), I'd probably give it a shot.
Barking dogs drive me nuts, even my own. I just bought a traditional bark collar for mine and every once in a blue moon I have to throw it on one of two that like to greet the morning (sometimes at 4:30am) with a series of K-9 style barks as they gallop out the backdoor. Once they do this a couple mornings in a row, someone wears the bark collar for a day or two to remind them that that's rude to the neighbors.
They've never made it past level "one" of the traditional shock collar. They don't even get popped anymore, ever. They know once it's on the fun is over. Reviews of the anti-bark collars with the SOUND like what you're asking out are generally not good (IE: they are often ineffective). FWIW