There is a belief, or rumor, that the OO seed balls repel spiders. My aunt, knowing that I don’t like spiders, brought a grocery sack full of them to me from Iowa.
I placed them all around my little basement apartment. Didn’t notice any reduction in spiders at all. lol
Dried OO seed balls might be fun to splatter with a baseball bat though.
I read that it repelled cockroaches.
Hope you do not need to test that out!