What to say on yelp to make people not want to go to that restaurant?

Dog Food

Tell the truth or don't post.

If there is an honest reason you did not like the place mention that.

Be truthful, to the point and if you did try to resolve the problem mention that but it was not resolved to your satisfaction.

Yelp's own policies prohibit you from making any false statements, and if you do the owners could go after you because of libel/slander laws in the US.

Give it a 1/0 star review and say you didn't care for the place. Be factual, be honest.

Mention all the things the restaurant does poorly. Yelp reviews are nothing but a ton of overblown opinions, hence why it's considered so trustworthy. Did your server suck? Was the food super bad? Fly in your soup? Over exaggerate, while still telling the truth, as much as possible. Don't be afraid to crack out the thesaurus either.

Simply say what you don't like about the restaurant.