When flies invade your home, you can try to scientifically swat them all or use this simpler, faster method: spray them with glass cleaner.
Household Hacker, in its roundup of seven life hacks, says the ammonia will knock them out for easy cleanup. Handy if you've run out of spray.
Check out the video above for six other clever hacks, including how to heat up two bowls in a microwave when they don't seem to fit.
Quick and Simple Life Hacks #10 [YouTube]