The first thirty seconds decide the outcome
The instinct is to go and get a mop. That is the wrong first move, because it leaves an unmarked hazard while the cleaner walks away from it. The correct first move is to stay with the spill and secure it, either by standing at it and directing people around or by deploying whatever warning is carried on the trolley. Only once the area is marked does the cleaner leave it to collect equipment.
That is why what the cleaner carries matters. A trolley on a public concourse should have signage and absorbent material on it at all times, not stored in a cupboard two floors away. The point of carrying them is that the response begins immediately. A crew that has to fetch its warning signage will always leave a gap, and the gap is where the incident happens.
