In Photos: How your dirty gas range and microwave could start a fire

A gas stove covered in grease (Photo courtesy of the National Institute of Technology and Evaluation)

A gas-stove burner cap with outlets that have become blocked due to grime is visible here. (Photo courtesy of the National Institute of Technology and Evaluation)

A gas stove on the right lights abnormally due to burner outlets that have become blocked with grime. (Photo courtesy of the National Institute of Technology and Evaluation)

Charred food remains inside a microwave (circled in red), which can cause fires, are seen here. (Photo courtesy of the National Institute of Technology and Evaluation)

Food remains inside a microwave catch fire. (Photo courtesy of the National Institute of Technology and Evaluation)

Grease that has accumulated on a grill tray, which can cause fires, is seen here. (Photo courtesy of the National Institute of Technology and Evaluation)

Grease that has accumulated on a grill tray catches fire. (Photo courtesy of the National Institute of Technology and Evaluation)