Missing The Most Overlooked Causes of Home Fires? Your chimney, fireplace and wood stoveeven your dryer vent--are often among the most overlooked causes of home fires. Then theres carbon monoxide intrusion and other hazards. We at Bulldog Chimney Sweeps inc. are dedicated to making your home free from such serious problemsand educating you on what to look out for in the future. Its been our specialty serving Colorado since 1993 so you can trust us to give you good advice and service.