In Western Australia, April 1st is the annual reminder date to check smoke detectors. You should push the test button to ensure it works, check for dust or cobwebs, and replace any 9V batteries. More importantly, note the replacement date on the back of the unit, as all smoke alarms must be replaced every 10 years to ensure they remain effective, according to the Western Australian Government. Why check on April 1st? - It's a memorable date to help people remember their smoke alarm maintenance.  - It serves as a reminder that regular testing is not a joke, but a crucial safety practice.  What to do 1. Push the test button: Hold it down until a loud alert tone is heard to ensure it's working.  2. Clean it: Use a vacuum cleaner to remove any dust or cobwebs from the alarm unit.  3. Change the battery: If your smoke alarm uses a 9V battery, replace it with a new, high-quality, long-life battery.  4. Check the age: Look for the manufacturer's date on the back of the alarm. If the alarm is more than 10 years old, it needs to be replaced.  5. Know your type: Replaceable battery alarms: These need a new battery every year.  Why it's critical - Fires happen fast: Smoke inhalation is a major danger, especially when you are asleep, and can be fatal.  - Early warning is key: A working smoke alarm provides early warning, giving you time to escape a house fire.  - Only working alarms save lives: Having a smoke alarm is not enough; it must be functioning correctly.  For more information, visit the Department of Fire and Emergency Services (DFES) website