Could anyone tell me is there an internet site or a book that can give me time estimates for how long on average it would take to clean things? What I need to know is, such as on average how long it would take to normally clean a refrigerator, stove, oven, sink, bathtub, etc. I know that there could be variables such as how dirty it was, etc. But I need this info for estimating jobs, and for payroll purposes. if anyone can help me please e-mail me. Thank You