Don’t know any spells, but I tried it in my garden to keep squirrels and birds away from my gardens. Mixed results: birds don’t like it; squirrels get used to it after the first day.
Christmas Tree shops is my source.
paprika wouldn’t work on squirrels, you have to use something made from really hot peppers, like chilies or ghost pepper powder.
Paprika is good to feed chickens to make the egg yolks deeper in color.