Babysitter Needed for my Children

We are looking for assistance with our 3 young children in Katy. I would like someone to help so I am able to take the kids to participate in activities like swim lessons, little gym ect, as well as the occasional evening for work events with my husband, that would be scheduled out in advance. We would prefer someone who has reliable transportation, who does not smoke, who is comfortable with pets and who is CPR certified.