I have been doing business with Shannon's for almost 20 years now, off and on. We have used Shannon's for staffing cocktail parties, cleaning and make-ready of houses in our real estate business, and cleaning our own properties.\r
If you need someone quick and/or want to use your credit card, this is a good service to call.
Pros: The staff is large. They can usually accomodate you in 1 or 2 days
Cons: You may not get the same person every time unless you have a regular schedule