Listerine antiseptic mouthwash is one of the strongest mouthwashes I have used. After gargling for thirty seconds with this mouthwash, your breath is guaranteed to be fresh for a long period of time. I personally have tried many other mouthwashes but none of them have worked as effectively as Listerine. This mouthwash lasts ten times longer and I do not have to worry about my breathe having a bad odor during a date or social event. I highly recommend this product to those who prefer results over smell. It is not the best smelling mouthwash but it has been the most effective for me. I suggest you continue to use this for long periods of time as I have because it kills the germs. It works on contact also immediately after using it. With this product I have said good bye to bad breathe and hello to fresh breathe for long periods of time. I will continue to use this product. The results have been great!