Start by lifting the lid off the top of the toilet tank and peeking inside.... if the nut that holds the handle onto the tank ...

When you push the flush handle, the water leaves the tank and washes the waste in the toilet bowl down the drain. For this ...

and water-filled condoms into the bowl and measure how well each flush handles the simulated waste. We use two different methods to assess how well a toilet gets the entire bowl clean. First ...