Other people keep theirs in use all year. People used to question the nutritional effects of barbecuing because they were concerned about the fat content of traditional barbecue fare like hot dogs and hamburgers. That concern is valid, but it's easily avoided by substituting skinless chicken and fish. However, we don't have proof that this process occurs in people.
Researchers note that how people barbecue affects the risks.
For example, marinating meat or poultry even briefly before cooking reduces the amount of HCAs formed by about 96 percent. Partially pre-cooking meat for two minutes in the microwave just before grilling prevents 90 percent of the HCAs normally formed. Avoid the black char that often forms during grilling, since it is particularly concentrated in cancer-causing substances. Other carcinogens of concern come from the smoke. You can limit the meat's contact with smoke and decrease this risk if you raise the grill a little higher from the heat or choose leaner meats and trim all visible fat so it can't drip and cause smoking.