Combine powder sugar and milk powder, set aside. In heavy sauceoan combine butter, sugar, and corn syrup. Heat to boil. Add in powder sugar mixture 1/3 at a time untill all blended and dissolved. Remove from heat, stir in vanilla. Continue to stir as it cools until mixture mounds slightly when dropped by a spoon. Spread into a buttered 8" square pan. Cool.
Cut candy in four strips, Then cut each strip in half. Shape each piece into a lod, wrap in wax paper and twist ends .Freeze or refrigerate until firm.
In a heavy saucepan, melt caramels with milk, stirring often.Roll logs in caramel mixture, then in pecans. Wrap in wax paper at room temperature in airtight container. Slice with serrated knife.