Be consistent, when you do things do them the same way each time so if you need to remember what was done you know for sure. Consistency also is key in behavioral ways. It is best to be of the same character whether there are people watching or not. Leave opinions out of it, if the customer has a way they want something done or kept, you're being paid to maintain that and not to give advice or to critique their personal preferences in regard to their domicile. The less chemicals the better! Save on cost, risk, and be more green; you can clean most things with a warm damp microfiber towel, especially a NORWEX brand woven cleaning cloth. Chemicals risk damage to surfaces of different furnitures and allergy concerns are always a must know, so the less you use them the less you have to worry about and it will cost less on your bottom line for your business budget. Don't work more without charging more. Customer wants a quick extra task handled? It is not unreasonable to add a task fee or charge an increased hourly rate for the time said task is being completed. Don't budge on this, because your labor is your product, and it should be paid for.