Last night I went to strip & wax a floor in a poorly lit entryway. It was rather difficult to make sure I got everything up due to the lighting. So I stripped the floor twice.- which meant extra time and extra stripper, but I wanted to make sure I did a good job for the customer.
When faced with a cleaning job - maximize your lighting so that all areas are cleaned and any spots are able to be removed. It will make your job easier and your customer will be pleased with the extra attention you gave the job. Hope this helps.