>>52430
Salt circles are an effective defense against the following mamano:
Snail girls, slug girls and Tritoina (though to a lesser extent) because the salt draws the water from them (don't worry they won't die, but just be dehydrated enough to have to instantly give up their chase against you to reach a water fountain before it sends them to Ms.Unicorn)
Demons, devils, succs, certain evil ghosts and their derivatives and other directly hellish girls due to the purifying/holy properties of salt.
Certain plant family girls won't be able to cross for much the same reason and snail,slugs and Tritoina.
Fresh water mermaids, see above.
Vampires,and jiangshi due to their innate need to count will have to count each salt crystal. This will take long enough that you can always add more once they make a notable dent in the circle.
Lilim. Not because the salt itself can stop them, but because mentally any Lilim in pursuit of you can be called "salty" and "a neet" which will in turn hopefully be mean enough comments to send them back to their rooms.
Note that any breaks or gaps, in the salt lines will render it ineffective against pursing mamano. Make sure the salt you use it kosher salt as common additives found in normal table salt will reduce effectiveness of salt lines. Mamano salt is ineffective and will just make you taste better for your future wife(s)