If this was something I really wanted to get invested in I would go for an ad that would be either $10 or $20.  It would reach a new audience of people and give the company business to keep going.  The age range for this company is pretty broad and that can be good and bad.  But with a carpet cleaning company you are trying to reach a wide variety of people.
For the ad I would offer Buy one get one free.  That would be pay for one room to get cleaned and get a second free.  I would also an offer for a return visit for referrals.  If they were able to give me some referrals I would give them 20% off their next cleaning.