Babysitter Needed for my Children - Full-time / Part-time

We are looking for a great nanny for 2 children in Pittsburgh. We would prefer someone who could help out with light housekeeping. We would prefer a nanny who does not smoke, who is comfortable with pets, who is CPR certified and who has college degree. This is part cleaning part watching kids (3&4). Its boys are napping mom runs an errand while you pick up while the kids sleep.