Urinary Tract Infection

I have a 6 month old Golden Retriever named Sparky that is having some bladder issues. I don’t think it’s an infection, but I’m not sure. I usually find small wet patches where the Dog had been sitting or lying. I have also seen Sparky have short involuntary leaks even when not having been excited. I am aware older dogs can experience this type of problem. Is it possible my dogs incontinence may be because of a urinary tract infection? I have read that certain supplements can keep a help in preventing urinary infections. In addition to immediate care I am looking for safe ways to best maintain my Dogs health.