We used the product to try and prevent our dog from chewing our furniture. It did not work. Our dog was not deterred at all.
If all you need is a mild deterrent, then this might work. I used it to try to prevent my dog from continuing to irritate a lick granuloma and it only stopped her for about an hour.
We bought this to use on our little toy poodle who was barbering himself due to an allergy flare up.
We changed the dogs diet to grain-free, poultry-free, and used a medicated shampoo to,successfully treat the cause however this product helped the dog stop licking his legs and this helped hair to regrow.
One of the negative reviews complained that it did not prevent the dog from chewing furniture. That's not what this product is designed for. It's designed to be safe to apply directly to the pet and it worked, as claimed, for us.