This product did not totally disappoint. It does what it says it will do. I think my pup just doesn't get it. After a few days, rather than stopping barking, she just got used to being sprayed in the face. Another thing I noticed is when the other dogs bark, she gets sprayed, but doesn't seem to mind.
If I have anything negative to say about the product it's simply that it took quite a while to get here - kinda slow, when you're excited to try something new and the pup keeps barking at the invisible critters in the back yard.