From March 12th, Estee's cleaner brand "Cleaning Power" will sell "Cleaning Power Moco Foam Nozzle Cleaner" for toilet seat nozzles. The actual retail price is around 516 yen (tax included).
A cleaner that removes water stains and stool stains and disinfects when sprayed on the nozzle of the warm water washing toilet seat and its surroundings. Spray the can face down, leave it until the bubbles fall, then put the nozzle back in and you're done.
The content is 40 ml, and it can be used for about 15 times with one injection for 1 second. Please check the model you are using for how to eject the nozzle and how to clean it.