I'm sure most of us have been called in to reclean carpets that have been "cleaned" with rug doctors etc.
I can remember one in particular where an outgoing tenant had hired a machine and cleaned her carpets,the agent called us in as it wasn't up to standard,the carpets were a mess,had a job to see any evidence of cleaning,so don't think these hire machines are a threat to our businesses,the tenant ended up paying twice.
John