Nanny Needed For My Children

My wife is a stay at home mom of 2 children (4-year-old girl and a new baby boy.) I work long hours and we dont have any family to help with the kids in this area. I would just like to try and find someone who is willing to come over in the afternoons (potentially a few times a week) just to watch the kids and give my wife a little break. Our 4-year-old attends school till 11 a.m. and I dont get home till the late evening. The idea is my wife would be able to catch up on a few hours of sleep, grocery shop, clean or cook food or even just be able to take some R&R time for herself.