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Plug the hole with something! Or turn off the faucet in the toilet and turn it on when you need to.
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Is it the water spray from the water tank or the water in the toilet bowl, or the water from the pipe?
Only by making it clear can someone else help you?
The water pressure in your house is low, and the toilet is lower than other locations, so there is no water in other places, so it is recommended to install a supercharger to solve the problem.
If a steel wool ball falls out of the toilet, it is best to find someone to take it out first, and then use the toilet, otherwise it will definitely be blocked. There will be special tools for the toilet to hook it out. Steel wool balls are easier to do, much easier to do than those with spoons.
The place where the toilet is sold can be given to contact the installer.
The easiest way to do this is to pour a full water bucket with a mop and go up and down the bucket inside.
It may be that the part of the float that drives the water is broken, and it can be replaced.