These two small buttons on your toilet hide a trick that could reduce your water bill.

They’re there, on your fuel tank, and you use them without a second thought. Yet, these two twin controls aren’t just for emptying the tank: used correctly, they can save you hundreds of euros and conserve a vital resource. Discover their true purpose.

You’ve probably pressed them hundreds of times without ever questioning their actual purpose. Yet, these two discreet buttons adorning the top of your toilet tank hold a well-kept secret: using these controls wisely can reduce your water bill while also making a concrete contribution to the environment.