Cleaners to use with Shark Steam Mop?

Are there any cleaners available that can be used in the shark steam mop? Or, are there any cleaners you can mop with using regular mop in between using shark that won't cause streaking? I love the no chemicals, but every few mops I'd like to get it really clean because of pet odor and small child that always ends up getting food in floor. I have the laminate floors. I was thinking mopping with white vingar but I remember having to steam mop like 5 or 6 times before all the streaks from mopping before would go away when I first got it. Thanks for any help!