in the fall our dog had an ecoli uti. he was on 1 antibiotic for 2 weeks after
retesting they cultured it again to find out that it had not cleared.while culturing they can check to see what antibiotics it will respond to. our dog was on meds the 2nd time 1 type for a month and 2 others 1 for 10 days the other for 20 days. it was expensive to treat but we have a pharmacy near us that does pet scrips that was cheaper than the vet.