Is Kleenex harmful to a toilet?

Yes, Kleenex can be harmful to a toilet. Unlike toilet paper, which is specifically designed to dissolve quickly in water, Kleenex is made from thicker materials that do not break down as easily. Flushing Kleenex can lead to clogs in Plumbing and sewage systems, potentially resulting in costly repairs. It's best to dispose of Kleenex in the trash rather than flushing it down the toilet.