Fairies are Snails with Wings
Okay, what is most known ritual to keep fairies away? Drawing a circle of salt.
Which animal cannot cross salt line? Snail.
What if snail was given wings? Well, they wouldn't get over salty obstacle not due to some magical thing. They wouldn't cross salt line because they'd be scared if something happened to their precious wings. Because fairy without wings is just a regular snail.
That's it for today. Snails.