Bait minnows near Georgetown, SC

I am going crappie fishing with a buddy down around Georgetown this weekend. I always end up having to buy minnows on the way down because he says all the local bait stores only have mud minnows. Does anyone here know a shop that sells the regular ole silver minnows in that area? Thank you kindly in advance for any responses. I'd rather get fresh minnows down there the day of rather than having to bring them with me and keep them 24 hours plus before we even fish.