Spit naturally dissolves, so it cleans well, and fast too. It’s not not harmful to any common materials afaik, it’s always immediately available. You need some way to wipe it off of course, just like with any other cleaning agent.
Just don’t let others see you, cause they’d be grossed out.
(Well it might be a little unhygienic, which is why it’s best as a quick/temporary solution, and you can do it properly later)
That depends on what you’re cleaning. The human mouth is very unhygenic by animal standards.
What do you mean, other animals mouths are cleaner?
Also your comment made me realize I probably got the idea from cats. Didn’t even realize it, but now it’s glaringly obvious.
We carry a lot of bacteria in our mouths. All animals do, but we’re up there because it’s like a dark swamp.