Deep cleans and empty houses
Buildup and vacant rooms are a different visit than maintenance.
An empty house shows everything. Inside the cabinets, the appliance that nobody wiped for a year, the floor under where the couch was. That is a different visit than a maintenance clean of a house people are still living in.
Landlords, sellers, and anyone handing over keys: book the deep or move-out clean, not the weekly. We would rather price the time than pretend a short visit covers it.