A friend recommended them to me so I gave them a shot. I've been using them for about 2 years now.
They do a great job, and they supply their own green cleaning products - I like that. Saved me the time of researching what's what.
Also like the fact they pay there workers well. After all they do all the work and deserve the money.
Can't help but think this alone makes for happier and better cleaners.
If you're looking for a cleaning company I highly recommend them.