There are no devices on the market which can remedy inappropriate installations and irresponsible practices. To put the selection of various commercial devices into context, no device is a substitute for proper maintenance, good practice and a thorough understanding of thatch fire risk management. Remember when seeking advice, it is often being given by someone trying to sell you something! Smoke alarms are essential for the preservation of life, but by the time they have detected smoke, it will be too late to save the property.