Slip and Fall. The case law in Maryland suggests that in order to prevail on a slip and fall case where liquid has been left on the floor one must prove how long it had been there. It is not as simple as just saying there was liquid on the floor. There must have been sufficient time for the occupier of the property to observe and clean up the liquid. It may not be enough to say the liquid was dirty because there may not be any inferences that can be drawn from mere dirty liquid. If there were footprints in the liquid or other evidence to suggest length of time on the floor, perhaps one could win such a case. One of the important cases in this regard is Manns v. Giant of Maryland, LLC at 871 A. 2d 627, 161 Md. App. 620.