Good points kangaroomama and I agree. In my contract I word it like this: Fees are due no matter if the client has sick or missed days for any reason or there are stat days or other holidays listed that the daycare is closed.

Unfortunately, we have to allow children into care with viruses all the time and if the nose is running clear and the cough doesn't sound like it is into the child's lungs and they aren't tugging at their ears then you pretty much have to let the child come in. However, if there is green mucous that usually means bacteria and the child should see a doctor for a bacterial infection. I know this from raising 4 children of my own and that just comes from experience.

Vomiting and diarrhea are no question! Stay away until symptom free for 24 hours as you already stated or they are spreading it to 5 other families and the daycare provider. Don't be afraid to stress that to your clients so they learn to be more considerate. Most people will get it with reminders once in a while.