Ovens which don't get clean enough the first time, can be put through a second cycle of cleaning almost immediately. Instructions on how to operate your self-cleaning oven are almost always located on the inside of the oven door or accompany the product's registration information. Always remove the racks before cleaning. If left in through the cleaning cycle, the high temperatures will discolor and warp them. Make sure the door is latched completely.
Many newer ovens feature self-locking cleaning cycles.
If yours does not, be sure to double-check the latch before throwing the oven into the cleaning cycle. Not doing so can ignite a grease fire or cause injury to the innocent person who pulls the door open. Keep small children and pets away from the oven during its self-cleaning mode. Never use commercial oven cleaner solutions during self-cleaning mode or at any other time. Many products are flammable and cause serious injury and death if exposed to high temperatures.