I can totally empathize with you! I have had my own children get sick, my little one with croup, and I am pretty sure it was from one of the dc children. I am also cleaning like crazy. I have not been blamed for other children getting sick but it sure is frustrating when parents send their children sick. My policy allows for children with a common cold to attend but I wonder how the common cold affects different kids, if with some little kids it turns into croup.
After an encounter with head lice today, I am revamping my policies and will be using the opportunity to remind parents of my illness policy. Also, I will be reminding them that giving Tylenol or advil to reduce a fever then dropping off at daycare will not be tolerated.
Parents don't want to be inconvenienced with taking care of their own child when sick and would rather risk the health of the whole childcare than take a day off to look after their own child. It's pretty sad. It also gives me a case of mommy guilt when my kids get sick from the daycare kids