Can You Put A Bar Of Soap In Toilet Tank

Can You Put a Bar of Soap in Toilet Tank?

Many people ask if it is safe and/or effective to put a bar of soap in their toilet tanks. There is no scientific answer to this question, as different people have had different experiences and results. However, it is generally safe to place a bar of soap in your toilet tank and it can in fact help reduce water usage.

How Does a Bar of Soap Help Reduce Water Usage?

When a bar of soap is placed in the toilet tank, it will break down over time in the water and release air bubbles that act as a disruption for the water entering the toilet bowl. This disruption helps prevent the water from flowing too quickly and causes the toilet to fill more slowly. This helps reduce the amount of water used for each flush, which can add up over time, leading to significant savings.

Are There Any Downsides to Putting a Bar of Soap in a Toilet Tank?

Although adding a bar of soap to the toilet tank can be helpful in some ways, there are a few negatives associated with it.

  • Cleanliness: the soap can get slimy over time, which can create an unsightly mess in the tank.
  • Clogging: the breakdown of the soap can potentially clog the toilet drain, which could lead to costly repairs.


In conclusion, it is generally safe to place a bar of soap in the toilet tank to help reduce water usage, but it is important to keep in mind the potential cleanliness and clogging issues mentioned above. If you decide to put a bar of soap in your toilet tank, make sure to check it periodically to make sure it is not causing any problems.

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