I have (4) dogs (3) Large Dogs: 100lb 15yo Shepherd, 35lb 15yo pitty and a 65lb 3yo White lab mix that are all males. Then I have (1) small 7lb 18yo Chihuahua that is female. Obviously, she is the alpha dog and the rest really do respect and listen to her. Ok, sorry, my ADHD kicked in a little bit, back to the review. For as long as I can remember, I have only used this brand of shampoo except for the specialty dry skin ones. I do always use this one first before any other shampoo because, in my opinion, it is the best and wiping out fleas and ticks. It is also the best at keeping them away. I always keep two bottles in my cabinet so I don’t run out. If you’re looking for a good flea and tick shampoo for any kind of dog, I highly recommend this product. As long as you follow the instructions and warnings. (i.e. age of puppies) I can almost guarantee that you will not be disappointed. It is also the only one that I’ve used that did not give my dogs some kind of an upset stomach the next day. If you’re looking for a good flea and tick shampoo get this product. You will not be disappointed..