This educates you just how to ask Facebook to eliminate reviews from a business Web page. Facebook will just remove reviews that violate their Community Requirements.
How To Delete Facebook Reviews
Actions
1. Open Facebook. It's heaven icon with a white "f" in the app drawer.
2. Most likely to the review you want to remove.
3. Tap the downward-pointing arrowhead. It's at the top-right corner of the review. [1]
4. Click Report.
5. Select a factor. The review will only be erased if it goes against Facebook's Neighborhood Criteria. [2] When you choose a factor, follow the on-screen guidelines to submit your request.