I've been giving this product to my eight year old dachshund mix, Zep. The product suggests using the product for a month to see results. It hasn't been quite a month yet, but there haven't been any UTI's during this time. The biggest change I have seen is that he is peeing a lot more frequently. This could be from his system being flushed out. It has mellowed out from the first few weeks.
The product is easy to use and administer. Hopefully it continues to work!