Remove turkey legs from bags and wash ALL of marinating off of turkey legs. This is very important due to getting all of the Prague powder off the skin. Using a paper towel pat dry the turkey legs. Spray the turkey legs with cooking oil so rub can stick to the skin. Apply rub so every inch is covered. I usually do this in a casserole dish so clean up is easy. Preheat grill or smoker to 325F.