Marinate your chicken in an airtight container, or completely covered. I prefer to use a ziplock bag, then I place the bag in a mixing bowl in the refrigerator, just in case the ziplock leaks (so it won't make a mess in the refrigerator!) It is also recommended to place the bowl on the bottom shelf of the refrigerator. This is so if anything does leak, you don't contaminate any produce or other items below the raw meat.