*Marinades and rubs are two terrific ways to add big flavors to food while grilling and they couldn't be easier to use. Give the meat or fish a quick rubdown with marinade or rub before cooking and let it sit and absorb the flavors.
*Marinate foods in the refrigerator, not on the kitchen counter (unless for 30 minutes or less).
*Use a nonmetal container.
*The same brush used for brushing marinades on raw meat should not be used on cooked meat. Either have two on hand or wash the brush in hot, soapy water, and dry thoroughly before using again.
*If a marinade in which raw meat was placed is to be used as a sauce after meat is cooked, be sure to bring the marinade to boiling and then boil 1 minute before serving.
*There are plenty of marinades available at the grocery store or you can make your own.
Source:Betty Crocker 'Sizzling Grilling'