It is my pleasure to recommend Tri Valley Janitorial Services as a purveyor of top quality, customer orientated janitorial service for commercial buildings. Without fail they are helpful and responsive to our every request. The owner personally checks in with her clients every week to verify that her staff is doing the best work possible. Every request is met with good grace and a positive attitude, no matter how unreasonable or how short the lead time. I AM A VERY SATISFIED CUSTOMER!