My MIL bought this for our 3 year old's b-day... chalkboard works great... no prep needed. We used outdoor chalk, but I'm not sure the type of chalk matters. Seems that M&D fixed the chalkboard problem. Can't wait to see my daughter play with this!!
I bought the companion set (that comes with chalk) and the chalk writes GREAT on the chalkboard! I don't know if it is a different type of chalk or if they fixed the problem, but I've had no problems with it.