If you want to sue a property owner for your slip and fall accident you’ll have to show that they were negligent and that their negligence caused your accident [1]. In order for a property owner to be found negligent, you’ll have to show that there was an unsafe condition. Plus, you’ll need to prove that they knew about it and that it caused your accident.
For example, if someone were to walk into a store, spill something and not inform anyone in the store, the store would have no knowledge of the unsafe condition. Then, a few minutes later you walk down that aisle and fall.
As long as the store can show that they monitor the conditions on their sales floor and there’s no way they could know about the spill, you’ll have a hard time proving that they were negligent.