make sure to switch off all appliances when you leave your house. especially ac and exhaust fans. fires at your absence may be catastrophic, but fire detected may be controlled easily. put LPG cylinders in well ventilated areas, avoid them getting exposed to sunlight or heat. make sure to turn off the regulators at night. switch off all unused sockets. ensure you leave at least 20% space in your tank each time when you visit a petrol station, especially if you park directly under the sun.