Long term tenant wants carpet cleaned

[Andrew S.]

An inherited long term (6 years in the apartment, 1 month under my ownership) tenant has asked if I have a carpet cleaner.  I don't have a carpet cleaner so I told them that.  I could rent one and clean their carpet or pay a professional cleaning service.  They're on a month-month lease and "don't plan to move out anytime soon".  Is it worth me offering to pay for or split the cost of a rental carpet cleaner or professional cleaning surface? 

Thanks.