Lara
Watch this Site they have other products and services built into the purchase
As best I can tell, the product works. My dog pays attention when I hit the button and tell him quiet and usually comes and lays beside me. HOWEVER several weeks later I had a charge of $39.95 on my credit card from Horizon Services, apparently somewhere during clicking through all the pages to get to the checkout, I signed up for a free trial that then later has a charge to it, I generally look for this sort of thing when buying on line because it seems to be the "norm". I ended up having to cancel my credit card, although Horizon Services did return my money after I contacted them with a sarcastic email. Unfortunately there must have been other things embedded in there because I have received notices from my credit card company about two other charges of $39.95 being declined. Looks like they sell this product on Amazon, buy it there instead of from Barksnomore.com then you can avoid the built in scam on the website.