Second, and more important, it does no harm to the toilet, because the patented Fluidmaster never puts its cleaning solution into contact with the most vulnerable parts of the toilet, those located in the tank. Inexpensive and easily installed, the Fluidmaster automatic toilet cleaner differs from other in-tank solutions in that, first and foremost, it operates automatically. The trouble is that, though reasonably effective, such in-tank treatments typically hurt more than help. “If you let them sit in the tank water for extended periods of time without flushing, the harsh chemicals that clean the bowl can actually degrade the internal components of your tank, possibly even eroding the tank itself,” says Daniel O’Brian of. Drop-in tablets and pour-in liquid cleansers have both been used for years. Of course, there are alternatives to the Fluidmaster system.
