Your toilet is the biggest drama queen in the house when it comes to leaks. Put a few drops of food coloring in the tank—any color will do. Wait 10 minutes without flushing.
If color shows up in the bowl, you’ve got a silent leak. It’s like a ghost in your plumbing! Replacing the flapper is cheap and takes five minutes—seriously, you can do it while still in your pajamas. Instant win.