Some people look at office cleaning as an unnecessary expense. What you don't realize is that having a clean office is one of the most important things! Think about it this way. Everyone goes home every night to their family and pets. You don't know how they keep their house. They do all of that and then come to work the next day and touch everything at work. So it is important that your cleaning company understands exactly what they are fighting every single day. If they are not cleaning door handles and surfaces that are touched then you're literally working in a germ factory.
If your office gets sick....then you are going to have a lot of people out and not working! That is not what you want!
Here are a couple of links that have stories about schools shutting down for cleaning.