Sitter Job in Summerville, South Carolina

Hi, I'm looking for someone who can watch my son in their home or mine from time to time. For the most part, he will be watched by his Grandma, but she is a caterer and often gets jobs with only a 1-2 day notice and then needs 2 days to prep and then work the actual job. She has been getting 1-2 jobs a week lately. In those situations, I would like to find someone who could watch my son while I work. I live in Summerville, but would be willing to drive a little further for great childcare. I am due November 12 and will be going back to work in January of 2015. I would like someone with references and who lives in a non-smoking home. Thank you!