Patients judge a practice on what they can see. Fingerprints on the reception screen, dust on the waiting room magazine rack or a bin left full in the patient toilet all chip away at confidence before the consult starts.
The bigger concern for practice managers is consistency. A general cleaner may be fine in an office but rush the touch points that matter in a clinic: chair arms, the payment terminal, the door handle into each consult room. When that happens on a busy week, nobody finds out until a staff member or patient points it out.
Most practices simply want the same thorough routine every night, done by people who understand clinical spaces, with a record to prove it.