I am very pleased with this product. Finally a spray collar that isn't buggy. I've tried many different ones and there is always some issue such as the little seal where you top up pops out and usually bounces into likely where all of the worlds missing socks are. This spray collar is worth the extra cash, and wow there is nothing like being able to see the level of the spray for once! Too bad it only comes in one size, I'd prefer one for smaller dogs. However, it's not too horribly large/heavy for my 14 lb pug. After a couple days of use, for the most part, now all I have to say in a low voice is "Do you need your collar?" and she stops barking and looks sheepish. It works! Thank you to the seller and the maker.