Determining compatibility is crucial for optimal performance. If you have a gravity flush tank with an overflow tube, the Happy Toilet Cleaner™ will work with your toilet flushing system. However, if you’re unsure, there are a few key factors to consider:

• Check if there is a hose from the fill valve to the overflow tube.

• Verify if the overflow tube is outside the large canister-style flush valve.

• If your toilet plumbing parts are not compatible, don’t worry. A new flush valve with an overflow tube can be installed to accommodate the Happy Toilet Cleaner™.

• There is a diagram of the gravity flushing system with an overflow tube, shown on the installation page of our website.

• If you still have questions or need assistance, please contact our friendly customer service. Please send us a photo of the inside of your toilet tank, so we can provide personalized guidance. It can be texted to 480-797-6201, emailed tocustomerservice@happytoilet.comor sent by thecontact formon our website.

The Happy Toilet Cleaner™ design does not work with Mansfield toilet flushing system.

Don’t worry! The Happy Toilet™ comes in a Universal Standard and a Kohler-Compatible version. Check your toilet brand before purchasing or contact customer support.