Why trolley bays deteriorate faster than anything else
A trolley bay concentrates several problems in a few square metres. Shoppers unload there, so food and drink spillage lands on the ground and stays. The bay is roofed in many centres, so rain never rinses it. Trolleys are pushed in wet from the carpark and their wheels grind whatever is on the surface into it. Cigarette ends collect at the edges.
The result is a surface that develops an ingrained condition within months and then resists ordinary washing. Because bays are outside the mall envelope and outside the carpark sweeping route, they belong to neither scope. Once one has deteriorated it needs a periodic treatment to recover, and after that a modest regular frequency will hold it easily. Recording the current condition of each bay at the walkthrough determines which need a recovery treatment before a routine frequency will hold them.
