I’ve used them several times, and the initial response in each market was fantastic, but seems to lose its effectiveness after a while. The only issue is that a third party is representing your product and your business, so be very clear with your representative about how they should approach it. Remember, the people selling it are working for commission, so they are more likely to do whatever they can to make a sale, including making false promises or being too pushy. For the most part, they do a good job of finding the right type of people, but you can’t be too sure. I would have to say more good than bad, though. Hope this helps.